MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c5b56bcdb7672777ac9f2ed52d73eb7645310d54d93582f48296277efa006561. 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: 11


Intelligence 11 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c5b56bcdb7672777ac9f2ed52d73eb7645310d54d93582f48296277efa006561
SHA3-384 hash: 63c07f9744b77f94237a61e01a925b3325d1b48b9ce5ff3eb948aaa31d90205b69bb51be21ff3e99697dcfffa93f347c
SHA1 hash: f1b4fa84ae66e136b9e4393a39d969eee1f091d8
MD5 hash: a2720e17c54697f94a6fc28a3b505cfc
humanhash: green-asparagus-quiet-princess
File name:Invoice..exe
Download: download sample
Signature Formbook
Create hunting rule
File size:615'936 bytes
First seen:2021-07-01 17:45:35 UTC
Last seen:2021-07-01 18:15:21 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:wBMqUWJLYQHgNQkNzEn/0vNSlwXDPI0q1ddRtSRdASleCE0rpc+9D:NBCJANQhLKDg0KddRtSRuees9/
Threatray 6'115 similar samples on MalwareBazaar
TLSH 87D4122529FD9079F2375FB666F83891C56AF362360AF64E29C103468B12781DDE323D
Reporter James_inthe_box
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
200
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Invoice..exe
Verdict:
Malicious activity
Analysis date:
2021-07-01 17:48:43 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/0f3a3212-8cff-4794-a820-d33779989c56

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/169210/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.900-1.UNOFFICIAL
Create hunting rule

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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/8de8fc42-ba34-4516-af34-358a687baf50
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/810731
Signature
.NET source code contains very large strings
C2 URLs / IPs found in malware configuration
Found malware configuration
Initial sample is a PE file and has a suspicious name
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 submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
Sigma detected: Suspicious Process Start Without DLL
Sigma detected: Suspicious Rundll32 Without Any CommandLine Params
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
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 443142 Sample: Invoice..exe Startdate: 01/07/2021 Architecture: WINDOWS Score: 100 33 www.knowyourpharmacy.com 2->33 35 knowyourpharmacy.com 2->35 39 Found malware configuration 2->39 41 Malicious sample detected (through community Yara rule) 2->41 43 Multi AV Scanner detection for submitted file 2->43 45 10 other signatures 2->45 11 Invoice..exe 3 2->11         started        signatures3 process4 file5 31 C:\Users\user\AppData\...\Invoice..exe.log, ASCII 11->31 dropped 55 Tries to detect virtualization through RDTSC time measurements 11->55 57 Injects a PE file into a foreign processes 11->57 15 Invoice..exe 11->15         started        18 Invoice..exe 11->18         started        signatures6 process7 signatures8 59 Modifies the context of a thread in another process (thread injection) 15->59 61 Maps a DLL or memory area into another process 15->61 63 Sample uses process hollowing technique 15->63 65 Queues an APC in another process (thread injection) 15->65 20 explorer.exe 15->20 injected process9 dnsIp10 37 www.jinshifj.com 154.88.23.88, 49745, 80 CNSERVERSUS Seychelles 20->37 47 System process connects to network (likely due to code injection or exploit) 20->47 24 rundll32.exe 20->24         started        signatures11 process12 signatures13 49 Modifies the context of a thread in another process (thread injection) 24->49 51 Maps a DLL or memory area into another process 24->51 53 Tries to detect virtualization through RDTSC time measurements 24->53 27 cmd.exe 1 24->27         started        process14 process15 29 conhost.exe 27->29         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c5b56bcdb7672777ac9f2ed52d73eb7645310d54d93582f48296277efa006561/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-07-01 15:49:27 UTC
File Type:
PE (.Net Exe)
Extracted files:
5
AV detection:
16 of 29 (55.17%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=yw2wxtnxm4txple7f3ks247lozctcdku3e2yf5ecsytx56qamvqq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
015ec3a8bb981a164782a6ce6514c232e7ca1597e34b4d7a68d5ec6bef2fc54b
Formbook
01bcf3e8880ff488b44247538c3fda538b586f6b9b222ea658d4fb8b68196803
Formbook
257432b5ffbd5ae253f6be351f71f968d407f15e7f5ea78d7b613c7d663eba9c
Formbook
57f599e4ae63304de5795909f694122665f7c492df8078f7c5abb084d09baa2d
Formbook
661c9517b7cbeba95cff9523e882193026187caf88ee9073656d475ada90a45e
Formbook
77f75ced9cfdb9bff40e705aaced15795f123e460db0fcb97463e0515aaf8af1
Formbook
b500e490e3aed21ac17d1bd9fe295628a6fc2682613f6971b765373b8ee706f6
Formbook
cee0d49fe5eb498e798bbbfaf93436426ee5f23b8e59dfe6afc21133c2c47486
Formbook
d3d0a52b6be4713710b0d9a74b3a0eb6a2dd77de6ebd65899fef5d424e330c3a
Formbook
e69fd364919f58fdedd5a970fd5869750afc9ed444fea306b44fd7d27291d53e
Formbook
+ 6'105 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader loader rat
Link:
https://tria.ge/reports/210701-d3z2c2wpwx/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Xloader Payload
Xloader
Malware Config
C2 Extraction:
http://www.rep.place/pba2/
Unpacked files
SH256 hash:
638abc18ff36d992de5ace1e20220bc48ecd0073adb950adbdc4e2d275335a9a
MD5 hash:
ff9b7c14099644c5df0bfa5145f76648
SHA1 hash:
7865cf1d19857284f6fba03c0ab98d1341aa1be7
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/8adb34c2-c74a-4be5-a829-72fc3221a5ae/
Parent samples :
015ec3a8bb981a164782a6ce6514c232e7ca1597e34b4d7a68d5ec6bef2fc54b
e69fd364919f58fdedd5a970fd5869750afc9ed444fea306b44fd7d27291d53e
01bcf3e8880ff488b44247538c3fda538b586f6b9b222ea658d4fb8b68196803
661c9517b7cbeba95cff9523e882193026187caf88ee9073656d475ada90a45e
b500e490e3aed21ac17d1bd9fe295628a6fc2682613f6971b765373b8ee706f6
cee0d49fe5eb498e798bbbfaf93436426ee5f23b8e59dfe6afc21133c2c47486
d3d0a52b6be4713710b0d9a74b3a0eb6a2dd77de6ebd65899fef5d424e330c3a
c5b56bcdb7672777ac9f2ed52d73eb7645310d54d93582f48296277efa006561
387b9e0f0b986a3a114ce5c9ddc33f6b0679b527b257326891d8d1c595109b8a
c5c7fee8ebfd267a7f8a220eee22206d43dbc608bb6842a95938f44e48483fad
SH256 hash:
49d6f303b2d6a3cd4e0514abbc16035a7ad76cfedbf187a4c9e6d061c3486365
MD5 hash:
4b8e180a837dce46a1953070346d6c40
SHA1 hash:
7923c8782c80c4254e75b9414e57fb148b84d545
Link:
https://www.unpac.me/results/8adb34c2-c74a-4be5-a829-72fc3221a5ae/
SH256 hash:
5bede9eedf6ae6df5a9d587c116c9583b31474c159c2b53486b000093cb3fde6
MD5 hash:
072eeac61b35d3f09edee4ff4f80f52d
SHA1 hash:
696fd9905a47e526470c2e234fef32f1ec1b74ad
Link:
https://www.unpac.me/results/8adb34c2-c74a-4be5-a829-72fc3221a5ae/
SH256 hash:
c5b56bcdb7672777ac9f2ed52d73eb7645310d54d93582f48296277efa006561
MD5 hash:
a2720e17c54697f94a6fc28a3b505cfc
SHA1 hash:
f1b4fa84ae66e136b9e4393a39d969eee1f091d8
Link:
https://www.unpac.me/results/8adb34c2-c74a-4be5-a829-72fc3221a5ae/
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/c5b56bcdb7672777ac9f2ed52d73eb7645310d54d93582f48296277efa006561

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:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFu
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
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.

  
Delivery method
Other
Cape
Cape
https://www.capesandbox.com/analysis/169210/

Comments