MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 137bbdb0a6a00a9167dff5cb670ec17aab82ae50392e12b1cdb6a08110d75285. 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: 12


Intelligence 12 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 137bbdb0a6a00a9167dff5cb670ec17aab82ae50392e12b1cdb6a08110d75285
SHA3-384 hash: 8a6e7cdf40d7f5b0b64b75b0e1c3f5328419093cf649d557372164c773b5e81eed53f4d94bc6f8957229701987c07e5e
SHA1 hash: a54b8f492a5183e83744a68d9780fd4a1e846f4d
MD5 hash: 69f7b7c9f79e33e0eed1381300fe305f
humanhash: wisconsin-glucose-india-florida
File name:proforma invoice_pdf_____________________________.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'096'704 bytes
First seen:2021-09-24 13:36:26 UTC
Last seen:2021-09-24 15:22:14 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 24576:Gqishom0Aw5J9iYIFuHp4SvFOqDdndjIfhO:Ssom0xiYIFuHp4SlRifh
Threatray 9'586 similar samples on MalwareBazaar
TLSH T106356C6422795BBEE59F5BBD80B31140926D7451F66AE35E8FFD00DC2826F5B8808F23
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
3
# of downloads :
206
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
proforma invoice_pdf_____________________________.exe
Verdict:
Malicious activity
Analysis date:
2021-09-24 13:39:39 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/f20177ea-d99a-449f-98e8-2a69d911340b

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/191188/
Detection(s):
SecuriteInfo.com.Trojan.Win32.Save.a.5916.24531.UNOFFICIAL
Create hunting rule

Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/2993cc76-cbb0-44a2-9b39-7a40435298cf
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/857390
Signature
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)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
Sigma detected: Suspicious Double Extension
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 signatures2 2 Behavior Graph ID: 489821 Sample: proforma invoice_pdf_______... Startdate: 24/09/2021 Architecture: WINDOWS Score: 100 36 Found malware configuration 2->36 38 Malicious sample detected (through community Yara rule) 2->38 40 Multi AV Scanner detection for submitted file 2->40 42 9 other signatures 2->42 10 proforma invoice_pdf_____________________________.exe 3 2->10         started        process3 file4 28 proforma invoice_p...___________.exe.log, ASCII 10->28 dropped 54 Injects a PE file into a foreign processes 10->54 14 proforma invoice_pdf_____________________________.exe 10->14         started        signatures5 process6 signatures7 56 Modifies the context of a thread in another process (thread injection) 14->56 58 Maps a DLL or memory area into another process 14->58 60 Sample uses process hollowing technique 14->60 62 Queues an APC in another process (thread injection) 14->62 17 explorer.exe 14->17 injected process8 dnsIp9 30 www.dahlkar.com 51.195.17.68, 49784, 80 OVHFR France 17->30 32 www.narccar.com 17->32 34 narccar.com 34.102.136.180, 49782, 80 GOOGLEUS United States 17->34 44 System process connects to network (likely due to code injection or exploit) 17->44 21 wscript.exe 17->21         started        signatures10 process11 signatures12 46 Self deletion via cmd delete 21->46 48 Modifies the context of a thread in another process (thread injection) 21->48 50 Maps a DLL or memory area into another process 21->50 52 Tries to detect virtualization through RDTSC time measurements 21->52 24 cmd.exe 1 21->24         started        process13 process14 26 conhost.exe 24->26         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/137bbdb0a6a00a9167dff5cb670ec17aab82ae50392e12b1cdb6a08110d75285/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-09-24 13:13:57 UTC
AV detection:
12 of 28 (42.86%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=cn533mfguafjcz676xfwodwbpkvyflsqhexbfmonw2qicegxkkcq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
05cc84b514af3890b82bbb8645e6f2ffd63782852f7ec8f00632cae804e7b443
Formbook
12f92a7d8e9599c69253c73bcf26dd3a1f8887fc397b71c408d9a0ddc22fb520
Formbook
17b08e4418f813543e91ad18ae2e50ecfe40692d9b5dec854e94ec0abbc92b11
Formbook
57c14f3c817855d5ba2bfabaade5929697472d2989a8a9bcff46e50ac499a4dc
Formbook
7f81bdd235dca279812a46cec7f585bde9d681906dba1398e8ac86dfc877d079
Formbook
ae33000cbdc7cc10a8d86ce07727c8159d66a6707e2a453d996dc61c709de96f
Formbook
b8ad131dedee5c7f3164a25f907a69c6f90632f901ecf50a61aa7e31b4c8334e
Formbook
b96965d845c925b8dc0f3e4279ad4e571c1409891fee795bde704c5b1f063ce9
Formbook
c8b5ad6ec571b93bce7b6ae25501d622eb7fda462b02455ff7bd9aaaace29aef
Formbook
+ 9'576 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:ajki rat spyware stealer trojan
Link:
https://tria.ge/reports/210924-qwt5kshbc9/
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 WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.midwestamericanwoman.com/ajki/
Unpacked files
SH256 hash:
a8fedbd8c8a0b308afd57bc4f591019b80826b11ccf9bccbf0fb88bdde0d359c
MD5 hash:
f948d27d8c6a18aee0db5748db6c8068
SHA1 hash:
94aa66929acbd9268a80cac53fd89000e46d8f9b
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/9b0f6b29-c88c-429a-a43a-e8fba7bff69e/
Parent samples :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 hash:
b8325b8c1f3caf30cb173e2f956f546cebe41eca77da63aafe7cf84771354215
MD5 hash:
f4181538a2811268714429c1a424fbfe
SHA1 hash:
cdd1e229b766afc685f5599e1e51ae3956e21b9c
Link:
https://www.unpac.me/results/9b0f6b29-c88c-429a-a43a-e8fba7bff69e/
SH256 hash:
9c5a0d91aa552718de45a502ebe8b2a6bff1a1c55c3f77e395c9685fe02996ce
MD5 hash:
8e4a58bd7255149468235e2e5d04c60a
SHA1 hash:
7c6055451862378cc800ef3e2ec7c46d3787241a
Link:
https://www.unpac.me/results/9b0f6b29-c88c-429a-a43a-e8fba7bff69e/
SH256 hash:
efd2f7657839b252c2fb8489c1ccf610b8e57b471efe049de86a74bc1506775d
MD5 hash:
c3f3e4a9e9ab54bf847a9fc02e7a2160
SHA1 hash:
0853bec33e36ede763927cda0f03129ca763bc07
Link:
https://www.unpac.me/results/9b0f6b29-c88c-429a-a43a-e8fba7bff69e/
SH256 hash:
137bbdb0a6a00a9167dff5cb670ec17aab82ae50392e12b1cdb6a08110d75285
MD5 hash:
69f7b7c9f79e33e0eed1381300fe305f
SHA1 hash:
a54b8f492a5183e83744a68d9780fd4a1e846f4d
Link:
https://www.unpac.me/results/9b0f6b29-c88c-429a-a43a-e8fba7bff69e/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.65
Link:
https://yomi.yoroi.company/submissions/137bbdb0a6a00a9167dff5cb670ec17aab82ae50392e12b1cdb6a08110d75285

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
Create hunting rule
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.

Malspam

Formbook

Executable exe 137bbdb0a6a00a9167dff5cb670ec17aab82ae50392e12b1cdb6a08110d75285

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/191188/

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