MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3efb5ed25276775c95cc60b4c8227a1401f5525d629148d393f5b85c25c565ec. 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: 9


Intelligence 9 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3efb5ed25276775c95cc60b4c8227a1401f5525d629148d393f5b85c25c565ec
SHA3-384 hash: 226608404e1091c6fe2c7b8131d95723d22f6503831b45aef10c31509762593dd34b5fe6c80eb70facd0d8d6a51f4aa9
SHA1 hash: 3681a38228d26e40150be43b23bb4a61b55a1122
MD5 hash: c112c3774a084041df7dd0e2d334a656
humanhash: fish-arkansas-moon-venus
File name:xxgTjC4efAMDXvr.exe
Download: download sample
Signature FormBook
Create hunting rule
File size:1'022'976 bytes
First seen:2020-10-16 17:44:30 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:s1Ofhdh6/hZQeegLoZ877iTyvMtnI+Va2Q6+QrTdH:s1Ofh8htYkpMIkQGp
Threatray 2'503 similar samples on MalwareBazaar
TLSH B4257B45E6398E1FCCDF4BFB09E6C128F3B52E05581DDA0D7AB97588227279026C1F4A
Reporter abuse_ch
Tags:exe FormBook


Avatar
abuse_ch
Malspam distributing FormBook:

HELO: ns5.4gbhost.com
Sending IP: 210.1.58.192
From: paro@cischemgroup.com
Subject: Attached T/T copy for payment.
Attachment: PAY IN PDF .rar (contains "xxgTjC4efAMDXvr.exe")

Intelligence

File Origin
# of uploads :
1
# of downloads :
99
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/72217/
Detection(s):
SecuriteInfo.com.Trojan.Packed2.42621.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Deleting a recently created file
Unauthorized injection to a recently created process
Creating a file
Creating a file in the %AppData% subdirectories
Reading critical registry keys
Launching cmd.exe command interpreter
Enabling autorun by creating a file
Unauthorized injection to a system process
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/494041
Signature
.NET source code contains potential unpacker
Detected FormBook malware
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
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)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Scheduled temp file as task from temp location
Sigma detected: Steal Google chrome login data
System process connects to network (likely due to code injection or exploit)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
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 access)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM_3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 299471 Sample: xxgTjC4efAMDXvr.exe Startdate: 16/10/2020 Architecture: WINDOWS Score: 100 53 Malicious sample detected (through community Yara rule) 2->53 55 Multi AV Scanner detection for dropped file 2->55 57 Sigma detected: Scheduled temp file as task from temp location 2->57 59 10 other signatures 2->59 10 xxgTjC4efAMDXvr.exe 6 2->10         started        process3 file4 39 C:\Users\user\AppData\RoamingURYWhTdx.exe, PE32 10->39 dropped 41 C:\Users\user\AppData\Local\...\tmp3977.tmp, XML 10->41 dropped 43 C:\Users\user\...\xxgTjC4efAMDXvr.exe.log, ASCII 10->43 dropped 71 Tries to detect virtualization through RDTSC time measurements 10->71 73 Injects a PE file into a foreign processes 10->73 14 xxgTjC4efAMDXvr.exe 10->14         started        17 schtasks.exe 1 10->17         started        signatures5 process6 signatures7 75 Modifies the context of a thread in another process (thread injection) 14->75 77 Maps a DLL or memory area into another process 14->77 79 Sample uses process hollowing technique 14->79 81 Queues an APC in another process (thread injection) 14->81 19 explorer.exe 14->19 injected 23 conhost.exe 17->23         started        process8 dnsIp9 47 www.thegamergang.com 202.124.241.178, 49756, 49757, 49758 NETREGISTRY-AS-APNetRegistryPtyLtdAU Australia 19->47 49 www.synertry.net 185.163.118.240, 49753, 49754, 49755 NETCUP-ASnetcupGmbHDE Germany 19->49 51 3 other IPs or domains 19->51 61 System process connects to network (likely due to code injection or exploit) 19->61 25 cmmon32.exe 18 19->25         started        signatures10 process11 file12 35 C:\Users\user\AppData\...\L67logrv.ini, data 25->35 dropped 37 C:\Users\user\AppData\...\L67logri.ini, data 25->37 dropped 63 Detected FormBook malware 25->63 65 Tries to steal Mail credentials (via file access) 25->65 67 Tries to harvest and steal browser information (history, passwords, etc) 25->67 69 3 other signatures 25->69 29 cmd.exe 2 25->29         started        signatures13 process14 file15 45 C:\Users\user\AppData\Local\Temp\DB1, SQLite 29->45 dropped 83 Tries to harvest and steal browser information (history, passwords, etc) 29->83 33 conhost.exe 29->33         started        signatures16 process17
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/3efb5ed25276775c95cc60b4c8227a1401f5525d629148d393f5b85c25c565ec/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2020-10-16 16:35:07 UTC
AV detection:
22 of 29 (75.86%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=h35v5ussoz3vzfommc2mqit2cqa7kus5mkiuru4t6w4fyjofmxwa._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
07528f3c583c546d2b444b091c3ede380c6427ed0691b95294c7e32dd35560ab
FormBook
41e247af1c9e83534cd1a251b618432759435c3f9c9dfd2c8760f712a6ccc5a4
FormBook
4ba0d07d32c048141100317f95bd6dd8b791ba9c6608730b8408530490a13922
FormBook
50ac2894b8dd67fe9225dd4fb78310ac56dbb103d425d596025e70d686952d0c
FormBook
76e0bf03767dfd6316810d96d2404daf16397a0ef3b90daf96ad67bc461209a8
FormBook
8e4ceb651508d097ba20fbb82af157ea25bc12e32caaf7d02247646e4e3c0629
FormBook
bb80388ea4df988a288c2d06274aee2b2db7f2e645ce83ad67980624708fbbd7
FormBook
da111408d9dccb99b2c429d535ca55f6e970d911da4c24553e75d02fe9c00489
FormBook
f397c24f2c684fdcd51dc9954c641d013437a78e24a5cf8c8778196a66a60372
FormBook
f4854fb409d136b74193144c50c888b36bbbbcde71b52acb5f8177a862ebd76c
FormBook
+ 2'493 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
rat spyware trojan stealer family:formbook
Link:
https://tria.ge/reports/201016-ceqvde4gce/
Behaviour
Creates scheduled task(s)
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Reads user/profile data of web browsers
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.trusted-inspections.com/k8b/
Unpacked files
SH256 hash:
3efb5ed25276775c95cc60b4c8227a1401f5525d629148d393f5b85c25c565ec
MD5 hash:
c112c3774a084041df7dd0e2d334a656
SHA1 hash:
3681a38228d26e40150be43b23bb4a61b55a1122
Link:
https://www.unpac.me/results/92170d07-939f-40df-b341-9db71af35724/
SH256 hash:
da9a3a872cb9bd36878b28c59e6e24176b3fbf1e13ea09138afbd24851f7dce2
MD5 hash:
dbd833813c5a71d950756e93a38b64d6
SHA1 hash:
689556b67bca86a2e235bcd622801c0efbbb09bd
Link:
https://www.unpac.me/results/92170d07-939f-40df-b341-9db71af35724/
SH256 hash:
607f04646c9f16f7c23fa69d4b8f660fc7c44d40e4f73a0c70a2b315debdaa8b
MD5 hash:
a90baadadf904455325f7bc787185c7b
SHA1 hash:
7d833bb819d638008c98be469b05db2feaf201cd
Link:
https://www.unpac.me/results/92170d07-939f-40df-b341-9db71af35724/
SH256 hash:
5a144f9e72d86bf7789929db2bb48481a8ce2d876da64d70c74a456658dc0b97
MD5 hash:
78d30848461d468119773c4c949b10b0
SHA1 hash:
91f23f2766aa75da9c6fb67e1dc437f87c2422a5
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/92170d07-939f-40df-b341-9db71af35724/
Parent samples :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 note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.35
Link:
https://yomi.yoroi.company/submissions/3efb5ed25276775c95cc60b4c8227a1401f5525d629148d393f5b85c25c565ec

File information

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

Malspam

FormBook

rar 50a07d2f4fcac5af64c8f018c38b1fdb14658027b3d306a4ba2817b046ced4cb

FormBook

Executable exe 3efb5ed25276775c95cc60b4c8227a1401f5525d629148d393f5b85c25c565ec

(this sample)

  
Dropped by
MD5 15baa080489ee65d58bc244d4e328f39
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/72217/
  
Dropped by
SHA256 50a07d2f4fcac5af64c8f018c38b1fdb14658027b3d306a4ba2817b046ced4cb

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