MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 87575e80cf3f6f017daa1c03d530359bf2cffeaecc5b88d12af4f4f9b85111fd. 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: 17


Intelligence 17 IOCs YARA 2 File information Comments
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SHA256 hash: 87575e80cf3f6f017daa1c03d530359bf2cffeaecc5b88d12af4f4f9b85111fd
SHA3-384 hash: a4b3cb40b7cf1f31b0373b539eed183ec5d8c99b31d1380854488a7f8db655b7a0ea9c6cddd810571bb532f39f165d8b
SHA1 hash: 638f98b852df87733fdc60472359c6ad5701736a
MD5 hash: b78e2fdd34c0c5833729ff5ed5530b99
humanhash: mockingbird-march-oklahoma-summer
File name:uTIyk9Ma8t6rxlP.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:877'568 bytes
First seen:2022-06-03 19:02:13 UTC
Last seen:2022-06-04 07:20:48 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:zkWK+1Aa5iaqai9Nu4IiBWLsiCCUR+q6Bf99ELY0+GZD1q7uNhZ+:zkWK+Kmq1HuJocUR+qYvH8JmS+
TLSH T1E8157C4339DC87CDD5A306F26C72F320216E7E0F46969E4ABED3A90D946128946793CF
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon ecec889ce6d8e8f0 (40 x Formbook, 21 x AgentTesla, 12 x SnakeKeylogger)
Reporter GovCERT_CH
Tags:exe FormBook xloader

Intelligence

File Origin
# of uploads :
3
# of downloads :
454
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
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ID:
1
File name:
uTIyk9Ma8t6rxlP.exe
Verdict:
Malicious activity
Analysis date:
2022-06-03 19:02:59 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/fe7ac73d-4492-4501-8fda-5616905c86c6

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/276578/
Detection(s):
SecuriteInfo.com.Trojan.Siggen17.63729.24259.19641.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-debug anti-vm control.exe obfuscated packed replace.exe
Link:
https://www.filescan.io/uploads/629a5ae60003c05e7e9a3b36/reports/0bfce5cc-08e0-4e40-91a9-9650aed1c6f6/overview
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/7027fef7-898c-4854-96b2-c1a3fe434798
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1006508
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
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
Self deletion via cmd or bat file
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 639004 Sample: uTIyk9Ma8t6rxlP.exe Startdate: 03/06/2022 Architecture: WINDOWS Score: 100 33 Found malware configuration 2->33 35 Malicious sample detected (through community Yara rule) 2->35 37 Antivirus detection for URL or domain 2->37 39 5 other signatures 2->39 10 uTIyk9Ma8t6rxlP.exe 3 2->10         started        process3 file4 29 C:\Users\user\...\uTIyk9Ma8t6rxlP.exe.log, ASCII 10->29 dropped 49 Tries to detect virtualization through RDTSC time measurements 10->49 14 uTIyk9Ma8t6rxlP.exe 10->14         started        signatures5 process6 signatures7 51 Modifies the context of a thread in another process (thread injection) 14->51 53 Maps a DLL or memory area into another process 14->53 55 Sample uses process hollowing technique 14->55 57 Queues an APC in another process (thread injection) 14->57 17 explorer.exe 14->17 injected process8 process9 19 help.exe 17->19         started        signatures10 41 Self deletion via cmd or bat file 19->41 43 Modifies the context of a thread in another process (thread injection) 19->43 45 Maps a DLL or memory area into another process 19->45 47 Tries to detect virtualization through RDTSC time measurements 19->47 22 explorer.exe 1 151 19->22         started        25 cmd.exe 1 19->25         started        process11 dnsIp12 31 192.168.2.1 unknown unknown 22->31 27 conhost.exe 25->27         started        process13
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/87575e80cf3f6f017daa1c03d530359bf2cffeaecc5b88d12af4f4f9b85111fd/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
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Status:
Malicious
First seen:
2022-06-03 09:48:25 UTC
File Type:
PE (.Net Exe)
Extracted files:
13
AV detection:
20 of 26 (76.92%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=q5lv5agph5xqc7nkdqb5kmbvtpzm77vozrnyrujk6t2ptocrch6q._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
xloader
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Score:
  10/10
Tags:
family:formbook family:xloader campaign:heds loader persistence rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220603-xqbvdahahr/
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Drops file in Program Files directory
Suspicious use of SetThreadContext
Adds Run key to start application
Deletes itself
Reads user/profile data of web browsers
Adds policy Run key to start application
Xloader Payload
Formbook
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
Unpacked files
SH256 hash:
90eb3b67fe88efdcaefaecd2f8f238f2c7da65ea46775f15fa5c6b9c13056ad7
MD5 hash:
97dc1517ccbd11aab5766486834bd21f
SHA1 hash:
3d4f76c1fc1d210e0d527798b4aa30ae848d9845
Detections:
win_formbook_g0
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win_formbook_auto
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Link:
https://www.unpac.me/results/9d025cd2-7d20-4bb6-8aa0-42c2d853df70/
Parent samples :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 hash:
dfa32dcf4fb22cb9cd131ccd9eadbb48104d00b5d382d832b1af575e1600dbc0
MD5 hash:
d8685b789f138a6754d19c5a0039745c
SHA1 hash:
9298e077c647285e385e1273677f1895e67f7b8d
Link:
https://www.unpac.me/results/9d025cd2-7d20-4bb6-8aa0-42c2d853df70/
SH256 hash:
640b02fbb3bf865b039a343ee09b2661f6d0e3d98a5fda518d0fe8c0a40f18eb
MD5 hash:
46a8e26d13856cd8ebe082eb04b5eab7
SHA1 hash:
81c283d9042a71d363b320ffb24e41b1def4c5c6
Link:
https://www.unpac.me/results/9d025cd2-7d20-4bb6-8aa0-42c2d853df70/
SH256 hash:
879c29560b21be7d9b69ca27ca4756df86e080fa3e34cb191aad5cb1e5f05504
MD5 hash:
30b6a54a992eae921a2eb8c5ea130911
SHA1 hash:
1c83f0319bffe007077c6656418c9b7344d5affe
Link:
https://www.unpac.me/results/9d025cd2-7d20-4bb6-8aa0-42c2d853df70/
SH256 hash:
87575e80cf3f6f017daa1c03d530359bf2cffeaecc5b88d12af4f4f9b85111fd
MD5 hash:
b78e2fdd34c0c5833729ff5ed5530b99
SHA1 hash:
638f98b852df87733fdc60472359c6ad5701736a
Link:
https://www.unpac.me/results/9d025cd2-7d20-4bb6-8aa0-42c2d853df70/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/87575e80cf3f/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/87575e80cf3f6f017daa1c03d530359bf2cffeaecc5b88d12af4f4f9b85111fd

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:pe_imphash
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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.

Malspam

Formbook

Executable exe 87575e80cf3f6f017daa1c03d530359bf2cffeaecc5b88d12af4f4f9b85111fd

(this sample)

  
Dropped by
xloader
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/276578/

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