MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c70917b8034aedf54cf578fa9db38399a6129376bc7d06cacd6b324fed45c5a7. 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 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c70917b8034aedf54cf578fa9db38399a6129376bc7d06cacd6b324fed45c5a7
SHA3-384 hash: dbaf76b22be2efe402d5566fe32dbdd1801f075b899e41832038a96e3f253f56de53f31f2ef01ca43ba3d3ad9429ec84
SHA1 hash: 72f6c8df84b627ece609e249b530c2e8bba949fc
MD5 hash: d8abd4f86a18863e236bd2f3118344f4
humanhash: december-avocado-helium-bakerloo
File name:Documento.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:886'272 bytes
First seen:2021-08-06 05:11:40 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash a27bedaa147286540d08fdf824189cfb (2 x NetWire, 1 x Formbook)
ssdeep 12288:EghRSVRxnU8yLl6hqTvkUFZOi3Df0nuvVnu75:hQhnUFlSekm53
Threatray 7'379 similar samples on MalwareBazaar
TLSH T15D15F891B22794A2D402657BAE91CDBFDCBD7C407411329AA2D77A6453F007B2932B3F
dhash icon f8a5d39a443434c4 (2 x NetWire, 1 x Formbook, 1 x RemcosRAT)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
310
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Documento.exe
Verdict:
Malicious activity
Analysis date:
2021-08-06 05:12:35 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/f4067f2d-04b1-4c2d-9a3e-e56aab885ec9

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/176862/
Detection(s):
SecuriteInfo.com.W32.AIDetect.malware1.17710.2804.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Connection attempt
Sending a custom TCP request
Creating a file
Deleting a recently created file
Launching a process
Running batch commands
Creating a process with a hidden window
Launching cmd.exe command interpreter
Sending a UDP request
Setting browser functions hooks
Unauthorized injection to a system process
Unauthorized injection to a browser process
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/144f1c3f-15e0-4bdf-af6c-9fb2028aa57e
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/828039
Signature
Allocates memory in foreign processes
C2 URLs / IPs found in malware configuration
Creates a thread in another existing process (thread injection)
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
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)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 460470 Sample: Documento.exe Startdate: 06/08/2021 Architecture: WINDOWS Score: 100 62 Found malware configuration 2->62 64 Malicious sample detected (through community Yara rule) 2->64 66 Yara detected FormBook 2->66 68 3 other signatures 2->68 10 Documento.exe 22 2->10         started        process3 dnsIp4 50 sn-files.fe.1drv.com 10->50 52 onedrive.live.com 10->52 54 apwvig.sn.files.1drv.com 10->54 72 Writes to foreign memory regions 10->72 74 Allocates memory in foreign processes 10->74 76 Creates a thread in another existing process (thread injection) 10->76 78 Injects a PE file into a foreign processes 10->78 14 logagent.exe 10->14         started        17 cmd.exe 1 10->17         started        19 cmd.exe 1 10->19         started        signatures5 process6 signatures7 80 Modifies the context of a thread in another process (thread injection) 14->80 82 Maps a DLL or memory area into another process 14->82 84 Sample uses process hollowing technique 14->84 86 2 other signatures 14->86 21 explorer.exe 14->21 injected 25 reg.exe 1 17->25         started        27 conhost.exe 17->27         started        29 cmd.exe 1 19->29         started        31 conhost.exe 19->31         started        process8 dnsIp9 44 www.newmillenniumwheels.com 160.121.20.187, 49748, 80 CLAYERLIMITED-AS-APClayerLimitedHK South Africa 21->44 46 www.manayikorean.site 21->46 48 2 other IPs or domains 21->48 70 System process connects to network (likely due to code injection or exploit) 21->70 33 wscript.exe 21->33         started        36 conhost.exe 25->36         started        38 conhost.exe 29->38         started        signatures10 process11 signatures12 56 Modifies the context of a thread in another process (thread injection) 33->56 58 Maps a DLL or memory area into another process 33->58 60 Tries to detect virtualization through RDTSC time measurements 33->60 40 cmd.exe 1 33->40         started        process13 process14 42 conhost.exe 40->42         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c70917b8034aedf54cf578fa9db38399a6129376bc7d06cacd6b324fed45c5a7/
Threat name:
Win32.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2021-08-06 01:51:53 UTC
AV detection:
22 of 28 (78.57%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=y4erpoadjlw7kthvpd5j3m4dtgtbfe3wxr6qnswnnmze73kfywtq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
031af74c61339ca40eda7563268d9e2e2803064c141d3c46eb20acad3764f4cc
Formbook
2c7540c6d066510b73a1a5c668dc74ec6d0d3f0716bb3adb6cd83afdd07f35ff
Formbook
72a002cd9cd49afe6f15c5dc2ad7e3f65471b21fd4331202183b87c7ebab7fe3
Formbook
9f7fd0ad05c3b8f6d3945a0753b7b20fc53528cfbf7c8b4a2ab7f49795937b44
Formbook
b3c5b3cf581d15fcbacf67b4bdba199bfe7089704875746109b3206eb07b99e2
Formbook
b8ad131dedee5c7f3164a25f907a69c6f90632f901ecf50a61aa7e31b4c8334e
Formbook
c7b835a38f13c18350ba953a8f57f8c90a237804c377ba32d6fd212daa08e98c
Formbook
d0116b0ea676a655b1d55a2b7a79fb2585c1d04803e9d1d6f9cd1da15f789138
Formbook
da8ac5be69302fcd92625e881ea1494e67b97ace71fcfa9e068f7d7b004f2248
Formbook
e96f510044e2be6e588df6baf04b49ee09a0b96404e79623cafba8465c4e24a8
Formbook
+ 7'369 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:kd8k rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/210806-89824dweyj/
Behaviour
Modifies registry key
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
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.drtimgood.com/kd8k/
Unpacked files
SH256 hash:
c873bd224bbf6f82aa169f079016ebdf7690b40a7db5dd8cfefd26404a9d50ca
MD5 hash:
d328f4ade4dd3cd77b3c055c6a7a7937
SHA1 hash:
5d2437502c20efaadd44d27bd5f2f748bdb48512
Link:
https://www.unpac.me/results/0f633f2d-8f8c-4c34-b750-7bc131e3c7e1/
SH256 hash:
c70917b8034aedf54cf578fa9db38399a6129376bc7d06cacd6b324fed45c5a7
MD5 hash:
d8abd4f86a18863e236bd2f3118344f4
SHA1 hash:
72f6c8df84b627ece609e249b530c2e8bba949fc
Link:
https://www.unpac.me/results/0f633f2d-8f8c-4c34-b750-7bc131e3c7e1/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/c70917b8034a/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/c70917b8034aedf54cf578fa9db38399a6129376bc7d06cacd6b324fed45c5a7

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

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/176862/

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