MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b3c1d0b2e2e4a47434e94d1c4ac33f7edd5bf2e8cc6e799b2742afa9118a7838. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry


Formbook


Vendor detections: 15


Intelligence 15 IOCs YARA 20 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b3c1d0b2e2e4a47434e94d1c4ac33f7edd5bf2e8cc6e799b2742afa9118a7838
SHA3-384 hash: cc1e0e2f65efcfcc99984866ea9fe11b8e7c6df9dd5c85a8aa925bbb4746abc951cfd0cf0b4ec2d7ebe88a19b8934e68
SHA1 hash: c63cce31e0b078da16d1a99542fe57eb29cafeb2
MD5 hash: d3d2d6e0a05e0a5aaa95be2275420145
humanhash: single-fillet-tennis-red
File name:SecuriteInfo.com.Win32.PWSX-gen.32091.16097
Download: download sample
Signature Formbook
Create hunting rule
File size:779'784 bytes
First seen:2024-03-15 07:17:31 UTC
Last seen:2024-03-15 13:11:26 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'611 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:I/iq+ZpFVKrMZsTIdFoDR+niJc89KaDzACphMW4fVu5iGXmL6ML+Kn8UikR:I1Kp0MQIdFoSiJc89KaxLM/s4RR
Threatray 3 similar samples on MalwareBazaar
TLSH T1E6F4220E3FB89506C7746FB195A3E2910B39BF586808C71DACAC758E91B5BC422417EF
TrID 69.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.0% (.EXE) Win64 Executable (generic) (10523/12/4)
6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.2% (.EXE) Win32 Executable (generic) (4504/4/1)
1.9% (.EXE) Win16/32 Executable Delphi generic (2072/23)
File icon (PE):PE icon
dhash icon 032f76606b636368 (6 x AgentTesla, 2 x Formbook, 1 x RemcosRAT)
Reporter SecuriteInfoCom
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
343
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
b3c1d0b2e2e4a47434e94d1c4ac33f7edd5bf2e8cc6e799b2742afa9118a7838.exe
Verdict:
Malicious activity
Analysis date:
2024-03-15 07:20:43 UTC
Tags:
formbook xloader stealer spyware
Link:
https://app.any.run/tasks/72ebd94e-8222-4469-b5a8-22e3e09d69ca

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/479090/
Detection(s):
Porcupine.Malware.58887.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Win32.PWSX-gen.32091.16097.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Launching a process
Creating a file
Moving a file to the Program Files subdirectory
Replacing files
Adding an exclusion to Microsoft Defender
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
overlay packed
Link:
https://www.filescan.io/uploads/65f3f62f83a3efb188d232de/reports/a3a38809-7eba-4738-818c-9c9fe6b56f77/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/b3c1d0b2e2e4a47434e94d1c4ac33f7edd5bf2e8cc6e799b2742afa9118a7838
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Malware family:
MSIL Injector
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/1f477b71-b7ce-428c-8557-311461c9ccad
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1409366
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Injects a PE file into a foreign processes
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Sigma detected: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Snort IDS alert for network traffic
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1409366 Sample: SecuriteInfo.com.Win32.PWSX... Startdate: 15/03/2024 Architecture: WINDOWS Score: 100 30 www.vertilehub.xyz 2->30 32 xiaoyue.zhuangkou.com 2->32 34 18 other IPs or domains 2->34 42 Snort IDS alert for network traffic 2->42 44 Malicious sample detected (through community Yara rule) 2->44 46 Antivirus detection for URL or domain 2->46 50 9 other signatures 2->50 10 SecuriteInfo.com.Win32.PWSX-gen.32091.16097.exe 4 2->10         started        signatures3 48 Performs DNS queries to domains with low reputation 30->48 process4 signatures5 60 Writes to foreign memory regions 10->60 62 Allocates memory in foreign processes 10->62 64 Adds a directory exclusion to Windows Defender 10->64 66 Injects a PE file into a foreign processes 10->66 13 RegSvcs.exe 10->13         started        16 powershell.exe 23 10->16         started        process6 signatures7 68 Maps a DLL or memory area into another process 13->68 18 GNucBGjWPjMpduCUFTDYsks.exe 13->18 injected 21 WmiPrvSE.exe 16->21         started        23 conhost.exe 16->23         started        process8 dnsIp9 36 xiaoyue.zhuangkou.com 47.76.88.64, 49722, 49726, 49727 VODAFONE-TRANSIT-ASVodafoneNZLtdNZ United States 18->36 38 www.vertilehub.xyz 203.161.49.220, 49749, 49750, 49751 VNPT-AS-VNVNPTCorpVN Malaysia 18->38 40 9 other IPs or domains 18->40 25 newdev.exe 13 18->25         started        process10 signatures11 52 Tries to steal Mail credentials (via file / registry access) 25->52 54 Tries to harvest and steal browser information (history, passwords, etc) 25->54 56 Writes to foreign memory regions 25->56 58 2 other signatures 25->58 28 firefox.exe 25->28         started        process12
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b3c1d0b2e2e4a47434e94d1c4ac33f7edd5bf2e8cc6e799b2742afa9118a7838
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b3c1d0b2e2e4a47434e94d1c4ac33f7edd5bf2e8cc6e799b2742afa9118a7838/
Threat name:
Win32.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2024-03-15 05:40:03 UTC
File Type:
PE (.Net Exe)
Extracted files:
11
AV detection:
23 of 37 (62.16%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=wpa5bmxc4sshinhjjuoevqz7p3ovx4xizrxhtgzhikx2semkpa4a._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
614ae605266b9829b5577ebd8562f5fadb2ef82337597d32e54c8ace9f1ea25c
Formbook
df09e53e0571765247faf08a316fd75c13e84be01f4db61b294e0ec95aaf1b5e
Formbook
Result
Malware family:
n/a
Score:
  7/10
Tags:
n/a
Link:
https://tria.ge/reports/240315-h4ytqscg69/
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Unpacked files
SH256 hash:
1dfec57f4a3a62ab6dabafc179068c505580316c3f148afb0511d37b6920ae25
MD5 hash:
40457eb7f0fa413ac2b8921e953ac44d
SHA1 hash:
dd06350aa187fe33a448c99dae20a575d739c718
Detections:
win_formbook_w0
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/a729844b-9c62-4d66-9e40-f94f16124e2e/
Parent samples :
b3c1d0b2e2e4a47434e94d1c4ac33f7edd5bf2e8cc6e799b2742afa9118a7838
3f756a83cc26f83550f25a526816879b5c086dcbe824612f0ae2f514853302a7
SH256 hash:
f35ee8182ca1f1077c639e55ef9f95c6516dff1470a30e360d9c395110840538
MD5 hash:
93bda17d5beae552754d7aaf86c6bccf
SHA1 hash:
a578ee58abae1cb7df0d5cb8e9b0c07b1b43e55d
Link:
https://www.unpac.me/results/a729844b-9c62-4d66-9e40-f94f16124e2e/
SH256 hash:
7b6c6c5eea5d2de022e86de0e318c42bee3c51c8075f17914060a7a2cb0beaa0
MD5 hash:
e7e4372e45ce99e16da8e1139d2dc014
SHA1 hash:
6dcd35eed559b9bc93976ab91b95dca418e08588
Link:
https://www.unpac.me/results/a729844b-9c62-4d66-9e40-f94f16124e2e/
SH256 hash:
b18c02279b5016ab433cb11fc68212055966fbe81bb7d7f10d526fb2b61d6454
MD5 hash:
149f6e1717a06c65c1f12b5b06940fa3
SHA1 hash:
d725ed17da37f999989da683ac1f53d50bb217d5
Link:
https://www.unpac.me/results/a729844b-9c62-4d66-9e40-f94f16124e2e/
SH256 hash:
b6b7223540d0dab10b48015a136ea1487c89ab01ff071df7c11dfd0b9cd95dc5
MD5 hash:
7b5ca8708a583b123366d1add80005d2
SHA1 hash:
74e4659c979bf042933bc5f1bd9866e3e3e40775
Link:
https://www.unpac.me/results/a729844b-9c62-4d66-9e40-f94f16124e2e/
SH256 hash:
c7b65c024c00424121be603e04c3032bfb1415c2bb12dadcf03c34ee72321c58
MD5 hash:
1c54147f268ac0afa3a41e7c89a79162
SHA1 hash:
221ff832887f8be905fd555f973422b587bacefb
Link:
https://www.unpac.me/results/a729844b-9c62-4d66-9e40-f94f16124e2e/
SH256 hash:
0824f83dec27b5f227a72ec2044079f72a85f8807d4e9585b88e39f7151e3c44
MD5 hash:
50030c1c01a172bfb7bd931edbd76ea6
SHA1 hash:
1f1e5566aa920e258ef0e7f88ed57e83f2aa6dd5
Link:
https://www.unpac.me/results/a729844b-9c62-4d66-9e40-f94f16124e2e/
SH256 hash:
7e43d8fdde010e0626b3ea346c0e63ffdb951f3418893fe6ee4d68daf80f2201
MD5 hash:
00dc652930134ee00473298e2a9650c2
SHA1 hash:
e1c4374302cb6641df91994800b841f1b9c1cb8f
Link:
https://www.unpac.me/results/a729844b-9c62-4d66-9e40-f94f16124e2e/
SH256 hash:
0bae6326f2bc5793ee5c0117437cdf695432ba28d0d904e180e441f8101b176f
MD5 hash:
e74d301a078b7ba94904f31b215d6bf2
SHA1 hash:
cc00a9b95ee1156434e96d12aa22f9eafa4afa90
Link:
https://www.unpac.me/results/a729844b-9c62-4d66-9e40-f94f16124e2e/
SH256 hash:
9c89b6e3036f6952ef41bd5734fe6daef5a3b22fea49fa953aecfaffbf020c14
MD5 hash:
dfdc58d2978a3bf973aa428e8b06e94c
SHA1 hash:
a722dba8305ff53198f12691f42850673ea5f4a6
Link:
https://www.unpac.me/results/a729844b-9c62-4d66-9e40-f94f16124e2e/
SH256 hash:
02333e9a6b34081d98026f344055b026fab0726213977f119962a8e1aef7a767
MD5 hash:
29a9f1214b57a84c20b87d2c0055a574
SHA1 hash:
8614b18db1fd101ade2c5e0d20d93f683b9625ac
Link:
https://www.unpac.me/results/a729844b-9c62-4d66-9e40-f94f16124e2e/
SH256 hash:
90129e719d08b97804a699c05d4f747488c0b6129a58945a1e0d625b00ac2b5f
MD5 hash:
6f7523be548cd543ac8466e5f11ac143
SHA1 hash:
22cef7dec772fb5d508aabece7e412f7c977795c
Link:
https://www.unpac.me/results/a729844b-9c62-4d66-9e40-f94f16124e2e/
SH256 hash:
5dc8b19520bc16d6caac301492fd6e919c7633ed43a4e3ff49c306c5730f8323
MD5 hash:
4ec4cf093a8aecec246757ca6c7a319b
SHA1 hash:
0be8b631c341b746c336d0b077c33fe8e643b29c
Link:
https://www.unpac.me/results/a729844b-9c62-4d66-9e40-f94f16124e2e/
SH256 hash:
b3c1d0b2e2e4a47434e94d1c4ac33f7edd5bf2e8cc6e799b2742afa9118a7838
MD5 hash:
d3d2d6e0a05e0a5aaa95be2275420145
SHA1 hash:
c63cce31e0b078da16d1a99542fe57eb29cafeb2
Detections:
INDICATOR_KB_CERT_7c1118cbbadc95da3752c46e47a27438
Create hunting rule
Link:
https://www.unpac.me/results/a729844b-9c62-4d66-9e40-f94f16124e2e/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b3c1d0b2e2e4/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/b3c1d0b2e2e4a47434e94d1c4ac33f7edd5bf2e8cc6e799b2742afa9118a7838

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:DebuggerCheck__GlobalFlags
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Active
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Thread
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:INDICATOR_KB_CERT_7c1118cbbadc95da3752c46e47a27438
Create hunting rule
Author:ditekSHen
Description:Detects executables signed with stolen, revoked or invalid certificates
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:pe_imphash
Create hunting rule
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:PE_Potentially_Signed_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Cape
Cape
https://www.capesandbox.com/analysis/479090/

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

Comments