MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 100a38f41bd7479fffee98011672258611db629db410d4ef622dc2b87ba5b6fe. 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: 15


Intelligence 15 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 100a38f41bd7479fffee98011672258611db629db410d4ef622dc2b87ba5b6fe
SHA3-384 hash: 342ceae8aa8d737ef876b24c40c6efd027e61fbdb3f1fdc9829fe8f39047a30f137ff29a42d0564a156ef1de5bac5768
SHA1 hash: 25f7125f1e02d3addce794b435679159cd1a3225
MD5 hash: 146cd34f4c9b02b767b1fd650341e1c0
humanhash: seven-freddie-oxygen-oklahoma
File name:001130.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:449'536 bytes
First seen:2021-12-03 13:25:02 UTC
Last seen:2021-12-03 14:36:34 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:mR7vTDn+X3vn8KMw5DxHXxJ0ZMzCGLtH:I7vTT+vn8K3DNfztH
Threatray 10'873 similar samples on MalwareBazaar
TLSH T1BAA4DF8632A452F1D53C5BB3BE53A44E27A36CF59911C50C6ED3F2CB29717600DA0AB7
Reporter pr0xylife
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
186
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
001130.exe
Verdict:
Malicious activity
Analysis date:
2021-12-03 13:26:43 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/c0baaca9-2869-47fe-b217-734c94e04406

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/211044/
Detection(s):
SecuriteInfo.com.Trojan.Siggen15.58552.1187.27399.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Сreating synchronization primitives
Creating a process from a recently created file
Creating a process with a hidden window
Creating a file in the %temp% directory
Launching a process
Unauthorized injection to a recently created process
Creating a file
Launching cmd.exe command interpreter
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/61aa1ab04d8e6f3a5e0d3e0d/reports/fd2ee3fe-43dd-4c88-bea1-3c945b41a4b3/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/3dc2ba2c-d242-48cf-891d-4d8f5680ec0b
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/900873
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
C2 URLs / IPs found in malware configuration
Found malware configuration
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)
Multi AV Scanner detection for domain / URL
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
Self deletion via cmd delete
Sigma detected: Powershell Defender Exclusion
Sigma detected: Suspicius Add Task From User AppData Temp
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
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
Uses ipconfig to lookup or modify the Windows network settings
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 533351 Sample: 001130.exe Startdate: 03/12/2021 Architecture: WINDOWS Score: 100 46 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->46 48 Multi AV Scanner detection for domain / URL 2->48 50 Found malware configuration 2->50 52 11 other signatures 2->52 10 001130.exe 7 2->10         started        process3 file4 36 C:\Users\user\AppData\...\tuzkwroiwhv.exe, PE32 10->36 dropped 38 C:\Users\user\AppData\Local\...\tmp3516.tmp, XML 10->38 dropped 40 C:\Users\user\AppData\...\001130.exe.log, ASCII 10->40 dropped 58 Uses schtasks.exe or at.exe to add and modify task schedules 10->58 60 Adds a directory exclusion to Windows Defender 10->60 62 Tries to detect virtualization through RDTSC time measurements 10->62 64 Injects a PE file into a foreign processes 10->64 14 001130.exe 10->14         started        17 powershell.exe 19 10->17         started        19 schtasks.exe 1 10->19         started        signatures5 process6 signatures7 74 Modifies the context of a thread in another process (thread injection) 14->74 76 Maps a DLL or memory area into another process 14->76 78 Sample uses process hollowing technique 14->78 80 Queues an APC in another process (thread injection) 14->80 21 explorer.exe 14->21 injected 25 conhost.exe 17->25         started        27 conhost.exe 19->27         started        process8 dnsIp9 42 www.vgmpradio.com 103.224.182.242, 49848, 80 TRELLIAN-AS-APTrellianPtyLimitedAU Australia 21->42 44 www.kakvototakova.com 156.242.205.175, 49843, 80 POWERLINE-AS-APPOWERLINEDATACENTERHK Seychelles 21->44 54 System process connects to network (likely due to code injection or exploit) 21->54 56 Uses ipconfig to lookup or modify the Windows network settings 21->56 29 ipconfig.exe 21->29         started        signatures10 process11 signatures12 66 Self deletion via cmd delete 29->66 68 Modifies the context of a thread in another process (thread injection) 29->68 70 Maps a DLL or memory area into another process 29->70 72 Tries to detect virtualization through RDTSC time measurements 29->72 32 cmd.exe 1 29->32         started        process13 process14 34 conhost.exe 32->34         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/100a38f41bd7479fffee98011672258611db629db410d4ef622dc2b87ba5b6fe/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-11-30 04:13:45 UTC
AV detection:
21 of 28 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=cafdr5a325dz777otaarm4rfqyi5wyu5wqinj33cfxblq65fw37a._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
1bb913d6f594107a8c8d4d64f9a3de85c602813d9ad93189b9949fbc8a93aa32
Formbook
2ac5823e51b08f55b089eba1300ad0dd347a3ffb2d41d9145a53be1ff63ba1d5
Formbook
415d8e7a309e0e7ea9cec8bd06f9170b0dc15aca3a553ff6fa7f6726997800a3
Formbook
62678459c076b6993bbe9cc617bde236afe8a87906f5de98adc375665ba0a84f
Formbook
73bab1467e20985a16b6991800c45cde9334e5e4bab1ab26394d039f03915f2f
Formbook
8ddc14ac94185fbe27b3764fb4e24fd8c25626a465074e8f640955a6f3409c08
Formbook
99e25501d1c736865e766fe4e347cda8817f4005be1d7b0c336451b89be71ed2
Formbook
a6b1721d8c0dde85f0b0bd080818c3c34616e990da2b879c3e3a01d8c56aaf6c
Formbook
+ 10'863 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:u1bs rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/211203-qnysssggdl/
Behaviour
Creates scheduled task(s)
Gathers network information
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
Enumerates physical storage devices
Suspicious use of SetThreadContext
Deletes itself
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.vgmpradio.com/u1bs/
Unpacked files
SH256 hash:
76103add05c8ca7a29efceafaa6d241c11de14c358d2a2f1dd33714c2423d3f3
MD5 hash:
245840d43ff7f615649fc1d41a34b349
SHA1 hash:
4318cc898f26f68f2042a9d5b262493f17528795
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/5de4636f-9cef-41ce-a485-1cdadd48469a/
Parent samples :
429add11efba80f4e7d037b428d2dfc76e2c6904b5ff94ab0ccaa1fb4d665348
1bb913d6f594107a8c8d4d64f9a3de85c602813d9ad93189b9949fbc8a93aa32
78670e73101801526b59bf2bdead06d95cad399ff72abadfc0e00ba557643c80
62678459c076b6993bbe9cc617bde236afe8a87906f5de98adc375665ba0a84f
3f329c3c43a80af4145116889d380b5022d7509b18a36143d3adf455d71ad02f
100a38f41bd7479fffee98011672258611db629db410d4ef622dc2b87ba5b6fe
SH256 hash:
b19104b568ca3ddccc2a8d3d10ecddb1ea240171e798dc3a486292cfa14b6365
MD5 hash:
7b0900da932f4ed9630d65b04422736d
SHA1 hash:
6fa340436e3a8e73ae2b3e911f861483183c68ef
Link:
https://www.unpac.me/results/5de4636f-9cef-41ce-a485-1cdadd48469a/
SH256 hash:
0cc4ac17190d9605c44509cdc8097627259e02b0356df439c9d6921a90d652de
MD5 hash:
90bcf789aa331f5d18779a98766bc376
SHA1 hash:
6325257b7241da46d13611837eb589b406a68d8a
Link:
https://www.unpac.me/results/5de4636f-9cef-41ce-a485-1cdadd48469a/
SH256 hash:
100a38f41bd7479fffee98011672258611db629db410d4ef622dc2b87ba5b6fe
MD5 hash:
146cd34f4c9b02b767b1fd650341e1c0
SHA1 hash:
25f7125f1e02d3addce794b435679159cd1a3225
Link:
https://www.unpac.me/results/5de4636f-9cef-41ce-a485-1cdadd48469a/
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/100a38f41bd7479fffee98011672258611db629db410d4ef622dc2b87ba5b6fe

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.

Cape
Cape
https://www.capesandbox.com/analysis/211044/

Comments