MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4e586d008dc06d3c77d590393b4e565273b30ef2b536a193976c9a82353878bf. 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: 13


Intelligence 13 IOCs YARA 3 File information Comments 1
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SHA256 hash: 4e586d008dc06d3c77d590393b4e565273b30ef2b536a193976c9a82353878bf
SHA3-384 hash: eefb7a595b3db0ad9807169255ac906475027dfcaab34fc58d38f565b11529209bfa95d85336382a3e63c7f012a85957
SHA1 hash: 3f439bef91c21086aa0551d82f0b8d8601072243
MD5 hash: 1d4dad86bbdac5cf52abafa6170a66c4
humanhash: island-lion-mississippi-cold
File name:1d4dad86bbdac5cf52abafa6170a66c4
Download: download sample
Signature Formbook
Create hunting rule
File size:289'304 bytes
First seen:2022-06-22 07:33:26 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 6144:YHIMsFEK9ttujVtxQVBSWmKy1/jV0fr1YQiAByc0aoco/k:YRsDH0SWd5IiCyc0vG
TLSH T16954D01A33C4CF11C89C6572D5DF493593F4AEC32A32E68A3F0DB92D29413A79D496CA
TrID 52.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
22.4% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
7.5% (.EXE) Win64 Executable (generic) (10523/12/4)
4.7% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
Reporter zbetcheckin
Tags:32 exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
223
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/282224/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Creating a file
Сreating synchronization primitives
Launching cmd.exe command interpreter
Searching for synchronization primitives
DNS request
Sending an HTTP GET request
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated overlay packed
Link:
https://www.filescan.io/uploads/62b2c5f91fcdba4e1a484c38/reports/f7345f8a-8e67-403e-ab8b-6f2a49b43ae1/overview
Result
Verdict:
UNKNOWN
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/94a90e57-442d-4525-84c3-905c62bebb1b
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1017743
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code references suspicious native API functions
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Creates an undocumented autostart registry key
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
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses netsh to modify the Windows network and firewall settings
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 650241 Sample: YjNnDjRlME Startdate: 22/06/2022 Architecture: WINDOWS Score: 100 40 www.kosodate-tiger.com 2->40 42 www.electricsemiloans.com 2->42 50 Snort IDS alert for network traffic 2->50 52 Multi AV Scanner detection for domain / URL 2->52 54 Malicious sample detected (through community Yara rule) 2->54 56 7 other signatures 2->56 11 YjNnDjRlME.exe 1 2->11         started        signatures3 process4 file5 38 C:\Users\user\AppData\...\YjNnDjRlME.exe.log, ASCII 11->38 dropped 72 Writes to foreign memory regions 11->72 74 Allocates memory in foreign processes 11->74 76 Injects a PE file into a foreign processes 11->76 78 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 11->78 15 cvtres.exe 11->15         started        signatures6 process7 signatures8 82 Modifies the context of a thread in another process (thread injection) 15->82 84 Maps a DLL or memory area into another process 15->84 86 Sample uses process hollowing technique 15->86 88 2 other signatures 15->88 18 explorer.exe 15->18 injected process9 dnsIp10 44 www.nusires.com 68.65.121.68, 49806, 80 NAMECHEAP-NETUS United States 18->44 46 ytc5axd6.n.cnamexingzuoy.com 156.251.170.13, 49842, 49844, 49845 CNSERVERSUS Seychelles 18->46 48 4 other IPs or domains 18->48 58 System process connects to network (likely due to code injection or exploit) 18->58 60 Performs DNS queries to domains with low reputation 18->60 62 Uses netsh to modify the Windows network and firewall settings 18->62 22 netsh.exe 1 12 18->22         started        25 autochk.exe 18->25         started        27 autofmt.exe 18->27         started        signatures11 process12 signatures13 64 Creates an undocumented autostart registry key 22->64 66 Tries to steal Mail credentials (via file / registry access) 22->66 68 Tries to harvest and steal browser information (history, passwords, etc) 22->68 70 3 other signatures 22->70 29 cmd.exe 2 22->29         started        32 cmd.exe 1 22->32         started        process14 signatures15 80 Tries to harvest and steal browser information (history, passwords, etc) 29->80 34 conhost.exe 29->34         started        36 conhost.exe 32->36         started        process16
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4e586d008dc06d3c77d590393b4e565273b30ef2b536a193976c9a82353878bf/
Threat name:
ByteCode-MSIL.Spyware.Noon
Create hunting rule
Status:
Malicious
First seen:
2022-06-22 07:34:09 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
20 of 26 (76.92%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=jzmg2aenybwty56vsa4twtswkjz3gdxswu3kde4xnsnienjypc7q._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:mt88 loader persistence rat spyware stealer suricata
Link:
https://tria.ge/reports/220622-jevapaafap/
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Drops file in Program Files directory
Suspicious use of SetThreadContext
Adds Run key to start application
Reads user/profile data of web browsers
Executes dropped EXE
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
Unpacked files
SH256 hash:
491b58cd14ab3e8d5c43f94a562342201d12c0ae0ef4900562525caf02342a3e
MD5 hash:
2940263c7ca3f82b3f9c7936b3128e58
SHA1 hash:
aa233f71dde2ca9030c4ab997245297c45f86fc5
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/3ad6be44-9edb-4ed1-a1c2-d1f79998a1de/
Parent samples :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 hash:
9309ac74fce4fad6f2e38f96c6649efa38fb952a3d7714aada618f0a66eea521
MD5 hash:
313e966990f093ad5e09d4c3d56e50dc
SHA1 hash:
244971c49bea6796aae478fcb979d7ce800f78ac
Link:
https://www.unpac.me/results/3ad6be44-9edb-4ed1-a1c2-d1f79998a1de/
SH256 hash:
4e586d008dc06d3c77d590393b4e565273b30ef2b536a193976c9a82353878bf
MD5 hash:
1d4dad86bbdac5cf52abafa6170a66c4
SHA1 hash:
3f439bef91c21086aa0551d82f0b8d8601072243
Link:
https://www.unpac.me/results/3ad6be44-9edb-4ed1-a1c2-d1f79998a1de/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4e586d008dc0/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/4e586d008dc06d3c77d590393b4e565273b30ef2b536a193976c9a82353878bf

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:exploit_any_poppopret
Create hunting rule
Author:Jeff White [karttoon@gmail.com] @noottrak
Description:Identify POP -> POP -> RET opcodes for quick ROP Gadget creation in target binaries.
Rule name:pe_imphash
Create hunting rule
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.

Web download

Formbook

Executable exe 4e586d008dc06d3c77d590393b4e565273b30ef2b536a193976c9a82353878bf

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2247151/
Cape
Cape
https://www.capesandbox.com/analysis/282224/

Comments


Avatar
zbet commented on 2022-06-22 07:33:29 UTC

url : hxxp://103.167.92.57/msoffice/vbc.exe