MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c289d98eaa7fed6ed8265b7654f593e597a6ea403118379de2e101a00e9d87a2. 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: 14


Intelligence 14 IOCs YARA 2 File information Comments
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SHA256 hash: c289d98eaa7fed6ed8265b7654f593e597a6ea403118379de2e101a00e9d87a2
SHA3-384 hash: ee6da2150948d4ea8806f470724eef9bf61f79c8e240ba1a08a371a86502573fdcce530a0643f3b9a0ddf6e63db48c4a
SHA1 hash: 1a2cd789151b459c80a0ebc8049e444233a59d03
MD5 hash: b5a1d0a95975840fccbf74da2ee0d251
humanhash: florida-alpha-blue-berlin
File name:doc#011010022.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:259'065 bytes
First seen:2022-05-11 09:36:51 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 61259b55b8912888e90f516ca08dc514 (1'059 x Formbook, 741 x AgentTesla, 427 x GuLoader)
ssdeep 6144:LOtION2sXDuuSI+CI6iRrB6sgxZQ6NGMup/MRWd+Wy:LOLN2s6HIlINpBgxTSp/MR++Wy
Threatray 15'414 similar samples on MalwareBazaar
TLSH T1CA441205BB91E5B7C3A29F321FBFFB215DFAD912009472474B4029793D21BC1E61A7A2
TrID 48.8% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
16.4% (.EXE) Win64 Executable (generic) (10523/12/4)
10.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
7.0% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter GovCERT_CH
Tags:exe FormBook xloader

Intelligence

File Origin
# of uploads :
1
# of downloads :
265
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/269648/
Detection(s):
SecuriteInfo.com.Variant.Jaik.72878.2320.26599.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a file in the %temp% directory
Creating a window
Creating a process from a recently created file
Сreating synchronization primitives
Launching a process
Launching cmd.exe command interpreter
Searching for synchronization primitives
DNS request
Sending an HTTP GET request
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Unauthorized injection to a system process
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/17112/overview
Behaviour
MalwareBazaar
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
control.exe overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/627b83f2d4bfd83491c6ea2e/reports/65d51ab1-e3f2-4294-8816-c40a3a4b3090/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/6028296c-2493-4f32-98b8-d45bc348d7ec
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/991746
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
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 dropped file
Multi AV Scanner detection for submitted file
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
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 624240 Sample: doc#011010022.exe Startdate: 11/05/2022 Architecture: WINDOWS Score: 100 36 www.topstronyrandkowe.com 2->36 38 www.lavistaranch.com 2->38 40 3 other IPs or domains 2->40 56 Found malware configuration 2->56 58 Malicious sample detected (through community Yara rule) 2->58 60 Antivirus detection for URL or domain 2->60 62 4 other signatures 2->62 12 doc#011010022.exe 19 2->12         started        signatures3 process4 file5 34 C:\Users\user\AppData\Local\...\ptmrvfaqa.exe, PE32 12->34 dropped 15 ptmrvfaqa.exe 12->15         started        process6 signatures7 72 Multi AV Scanner detection for dropped file 15->72 74 Tries to detect virtualization through RDTSC time measurements 15->74 18 ptmrvfaqa.exe 15->18         started        process8 signatures9 48 Modifies the context of a thread in another process (thread injection) 18->48 50 Maps a DLL or memory area into another process 18->50 52 Sample uses process hollowing technique 18->52 54 Queues an APC in another process (thread injection) 18->54 21 explorer.exe 18->21 injected process10 dnsIp11 42 www.bachhoahaisan.com 188.114.96.10, 49770, 80 CLOUDFLARENETUS European Union 21->42 44 www.topstronyrandkowe.com 52.2.128.200, 49806, 80 AMAZON-AESUS United States 21->44 46 8 other IPs or domains 21->46 64 System process connects to network (likely due to code injection or exploit) 21->64 25 cmstp.exe 21->25         started        28 autofmt.exe 21->28         started        signatures12 process13 signatures14 66 Modifies the context of a thread in another process (thread injection) 25->66 68 Maps a DLL or memory area into another process 25->68 70 Tries to detect virtualization through RDTSC time measurements 25->70 30 cmd.exe 1 25->30         started        process15 process16 32 conhost.exe 30->32         started       
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c289d98eaa7fed6ed8265b7654f593e597a6ea403118379de2e101a00e9d87a2/
Threat name:
Win32.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2022-05-11 06:38:10 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
23 of 26 (88.46%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=yke5tdvkp7ww5wbgln3fj5mt4wl2n2sagemdphpc4ea2adu5q6ra._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
19a007d4980b99ea32ee2d9feb1c7479ee4c7b165b159fd4fbd33622b661009d
Formbook
3bc803f9caaeca99da460ce804bfc9bf4cb8c1dc33d08016002e4fe7263a6111
Formbook
60286309bbd404c1aa6cf3a5c0ae2b09a1882c7964517a9b9d2bc844f3afc510
Formbook
7f2f847bde8c4df56662677d1df9c413b2328786469a6065b6793ad90198e35d
Formbook
87bc99f92dd1d5344195aed847c8ed3af8e0aea954133a97fb65834e81278645
Formbook
e473eec04a43a280723367337e0ff1083ed5f7dea858173dff9ff4c6c8a89029
Formbook
e5b723d9a13e6fec23839823866253128dbe758c31082616ca89cf55d35a3998
Formbook
+ 15'404 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:formbook family:xloader campaign:hq0b loader persistence rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220511-llgdhsahhn/
Behaviour
Modifies Internet Explorer settings
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
Program crash
Drops file in Program Files directory
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Reads user/profile data of web browsers
Executes dropped EXE
Xloader Payload
Formbook
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
f25793bc08150360b3fdda7ed0f8f047e733821bbdbf736768521c7fc244f167
MD5 hash:
a34974741701cd0bdedf2a40aa912c82
SHA1 hash:
00ce5458d0a3772a2fb48480db21ea17a098e1ca
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/dbdab537-9371-4aee-9d8c-7c2b286f347c/
Parent samples :
60286309bbd404c1aa6cf3a5c0ae2b09a1882c7964517a9b9d2bc844f3afc510
f59c7ddd5d3897e0cb1f4400a9b6913d1b07a08d41f93fc5fbdbb9c5be356cc3
b840b6933e1769bf3d7ba1ae81eb233fde83dfe7e382388dced95bf9ff01083b
c289d98eaa7fed6ed8265b7654f593e597a6ea403118379de2e101a00e9d87a2
11a7ff5bbc61ffdf2bf726710f6d091b8724027e1bf3ca6b8e42a3d337cd0f2c
SH256 hash:
1c36c9258704736b1da2e90896c334558ccbe7c772326da625e455a0d4c0536e
MD5 hash:
d1f11e301dd6428acccbac5d9a3c909e
SHA1 hash:
b4cd81a0ba5c2cc60369b040dcd1191a1e2fd495
Link:
https://www.unpac.me/results/dbdab537-9371-4aee-9d8c-7c2b286f347c/
SH256 hash:
c289d98eaa7fed6ed8265b7654f593e597a6ea403118379de2e101a00e9d87a2
MD5 hash:
b5a1d0a95975840fccbf74da2ee0d251
SHA1 hash:
1a2cd789151b459c80a0ebc8049e444233a59d03
Link:
https://www.unpac.me/results/dbdab537-9371-4aee-9d8c-7c2b286f347c/
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/c289d98eaa7fed6ed8265b7654f593e597a6ea403118379de2e101a00e9d87a2

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:malware_Formbook_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.formbook.

File information

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

Malspam

Formbook

Executable exe c289d98eaa7fed6ed8265b7654f593e597a6ea403118379de2e101a00e9d87a2

(this sample)

  
Dropped by
xloader
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/269648/

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