MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 83e5cd1ba8c1485400c9faa0295df97768515bb2161114790dd6a3d8cbb05c4a. 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 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 83e5cd1ba8c1485400c9faa0295df97768515bb2161114790dd6a3d8cbb05c4a
SHA3-384 hash: 8f2305fff484253b78c95648cf7dcd3f554bd96d36e64bde3ed84b8739187b29c199fee7202e1461ac7e903ee1253382
SHA1 hash: 91ab445e375df3853d963662e7b6134616e94dd0
MD5 hash: 606e6075bf7e419fc19c36e467b600a6
humanhash: sierra-jersey-robert-sodium
File name:83e5cd1ba8c1485400c9faa0295df97768515bb2161114790dd6a3d8cbb05c4a
Download: download sample
Signature Formbook
Create hunting rule
File size:772'096 bytes
First seen:2025-01-10 14:07:32 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'737 x AgentTesla, 19'596 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:xEoPN92Tuf/sv98Vx4PlsfMXuLjej1YhZ0DfMSgMmE:+oPN9eE/sv98VxGsfMCehYhCTMS8E
TLSH T12FF4BF1466558F63CA7487F83872E07053FC5EAEA41EF2655DC27EEB79A2F008950E83
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10522/11/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
188
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
83e5cd1ba8c1485400c9faa0295df97768515bb2161114790dd6a3d8cbb05c4a
Verdict:
No threats detected
Analysis date:
2025-01-10 14:43:39 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/9578322b-87ca-4615-85d6-d6021acc370b

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Win.Dropper.Nanocore-10025638-0
Create hunting rule

Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=678129eb2c8240e189bb8236
Tags:
shell virus micro
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Adding an exclusion to Microsoft Defender
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
nanocore packed packed packer_detected
Link:
https://www.filescan.io/uploads/678129d9cf3f467cfb42ad6d/reports/b02acfb7-94af-4150-9b34-d59f19fca3fd/overview
Verdict:
Malicious
Labled as:
Jalapeno.Generic
Link:
https://www.hybrid-analysis.com/sample/83e5cd1ba8c1485400c9faa0295df97768515bb2161114790dd6a3d8cbb05c4a
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:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/4f971ee6-ef97-44b7-b9ab-4c01053c6f60
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1587618
Signature
Adds a directory exclusion to Windows Defender
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found direct / indirect Syscall (likely to bypass EDR)
Found malware configuration
Loading BitLocker PowerShell Module
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Switches to a custom stack to bypass stack traces
Tries to detect virtualization through RDTSC time measurements
Tries to resolve many domain names, but no domain seems valid
Uses netsh to modify the Windows network and firewall settings
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1587618 Sample: WLd9OwUmF5.exe Startdate: 10/01/2025 Architecture: WINDOWS Score: 100 38 www.y-language-menu.net 2->38 40 www.ltraman.pro 2->40 42 9 other IPs or domains 2->42 44 Found malware configuration 2->44 46 Malicious sample detected (through community Yara rule) 2->46 48 Antivirus detection for URL or domain 2->48 50 9 other signatures 2->50 11 WLd9OwUmF5.exe 4 2->11         started        signatures3 process4 file5 36 C:\Users\user\AppData\...\WLd9OwUmF5.exe.log, ASCII 11->36 dropped 54 Adds a directory exclusion to Windows Defender 11->54 56 Tries to detect virtualization through RDTSC time measurements 11->56 58 Switches to a custom stack to bypass stack traces 11->58 15 WLd9OwUmF5.exe 11->15         started        18 powershell.exe 22 11->18         started        20 WLd9OwUmF5.exe 11->20         started        signatures6 process7 signatures8 68 Modifies the context of a thread in another process (thread injection) 15->68 70 Maps a DLL or memory area into another process 15->70 72 Sample uses process hollowing technique 15->72 76 2 other signatures 15->76 22 explorer.exe 101 7 15->22 injected 74 Loading BitLocker PowerShell Module 18->74 25 WmiPrvSE.exe 18->25         started        27 conhost.exe 18->27         started        process9 signatures10 52 Uses netsh to modify the Windows network and firewall settings 22->52 29 netsh.exe 22->29         started        process11 signatures12 60 Modifies the context of a thread in another process (thread injection) 29->60 62 Maps a DLL or memory area into another process 29->62 64 Tries to detect virtualization through RDTSC time measurements 29->64 66 Switches to a custom stack to bypass stack traces 29->66 32 cmd.exe 1 29->32         started        process13 process14 34 conhost.exe 32->34         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/83e5cd1ba8c1485400c9faa0295df97768515bb2161114790dd6a3d8cbb05c4a
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/83e5cd1ba8c1485400c9faa0295df97768515bb2161114790dd6a3d8cbb05c4a/
Threat name:
ByteCode-MSIL.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2024-10-09 15:54:30 UTC
AV detection:
22 of 24 (91.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qps42g5iyfefiagj7kqcsxpzo5ufcw5scyiri6in22r5rs5qlrfa._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:bc01 discovery execution rat spyware stealer trojan
Link:
https://tria.ge/reports/250110-rfk3eaylbq/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Command and Scripting Interpreter: PowerShell
Formbook payload
Formbook
Formbook family
Verdict:
Malicious
Tags:
Win.Dropper.Nanocore-10025638-0
YARA:
n/a
Link:
https://app.threat.zone/submission/5d564430-b4b0-4d06-9fbd-65acca119496
Unpacked files
SH256 hash:
07864a36094fdb51d595bc3e42bce8429054de6c820f8c9dcfe1820c0fd1f8ff
MD5 hash:
d3b47fb3dd8b1c832901282b2d95a83b
SHA1 hash:
84d0afe2d8b7efd5f06eab1ac26d2bc9e25f9c38
Detections:
FormBook
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
win_formbook_w0
Create hunting rule
Formbook
Create hunting rule
Windows_Trojan_Formbook
Create hunting rule
Link:
https://www.unpac.me/results/19e74132-312d-4d8a-a362-a020fdbc1619/
Parent samples :
18911c12980ff90d3ca5b456a41ba93f6e63d14efa8763ee354c3684e0632795
55a8d72b696099f7b5803eafc1afd27432754f3c0c90bbdac46a6e964e5818f4
883b2afba671ff4851527b315260a4415a111c013811fec1822dcae4076628e5
8924d6255fe634004cc46de0a9ee6b4d7c44c1612947d747ebea2a6c06d2a37e
c76f4cc201813bc9e4a8d5ae27ce0c59b799f02dd48b3e09af20118a8fe18c50
23bc8acbb8a1e716512ac2ea9426d3fc46938cccac426f344c0314aafb17769e
94f858ec5529f4f52ae1bed542d9a38b2ab7e4be0446c4d9252f0de3d7cf2dce
e7fc9e51d81f4b40dca80a3d83ca54a03120566b6dd6f76e0299546ac178f633
c240de1c470b2ba22b8628de9a10b7d81e9f453eb94a46a9d0875f7f1705409c
090ae9dc91f1165ca92841d7e3485580caa257c2848fed356d78c86e3d72f50b
ec40bd9352347399d79a1393ee4478d945b81a0c5555a8d30bf043afb1e70e93
64a8f5c2209bf86e1aa4489fffa5cf93aee6955b0106909345a313de38ad7885
83e5cd1ba8c1485400c9faa0295df97768515bb2161114790dd6a3d8cbb05c4a
8c3b7bab6d9c32f813aa49cc65578049f516dd8607f6b2b43fd1e696d5b86988
f6f8e9f276a4246055e3bdc46ad1276ef453cbf6d6e8affe67127ea0099bece8
bf7e2c77f1159e34afbead32a16fbff023b6467104ff0220c81f607a2910880e
ece49e828c96a3cbc96535f04ef66109c997cb13a87850c4b66b3de0fd2818f7
6c2cf6bf017b8e9c8731b0b0bc1ddfd20c14e381d5282832d5646ac29158cf73
676528e924dfe6e5e119f33ac5e7e8ee5661f871759e4b32ac27b0a1d243e329
010fc4f0e382f0c0de55b3fcf4b80f6284694833af9d759c584b63a7d540cf2f
SH256 hash:
607c92a11e4bdbe4769091b3eea1c16a0f92a9a95cf4ecdb7c468482295c523f
MD5 hash:
15cb833acbdfe2c70e0662130a411f50
SHA1 hash:
53118a6f72b4af13571fb107fb7f66d2159b3e6e
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/19e74132-312d-4d8a-a362-a020fdbc1619/
SH256 hash:
682c261fcd08c676ef231f46eac1c054c8df17522846b9e4adbafb62e8482dab
MD5 hash:
5a6cead6de3340dd9e0b16d599e5d1f5
SHA1 hash:
00e25f93284ff0d2493c6df3a596891d0848399e
Link:
https://www.unpac.me/results/19e74132-312d-4d8a-a362-a020fdbc1619/
SH256 hash:
83e5cd1ba8c1485400c9faa0295df97768515bb2161114790dd6a3d8cbb05c4a
MD5 hash:
606e6075bf7e419fc19c36e467b600a6
SHA1 hash:
91ab445e375df3853d963662e7b6134616e94dd0
Link:
https://www.unpac.me/results/19e74132-312d-4d8a-a362-a020fdbc1619/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/83e5cd1ba8c1485400c9faa0295df97768515bb2161114790dd6a3d8cbb05c4a

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:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

File information

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

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

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