MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 28fc7ef1aa47bbec6342320a56f7accc1bc57cf96a5b75762f33fb5f9eea96c7. 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: 13


Intelligence 13 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 28fc7ef1aa47bbec6342320a56f7accc1bc57cf96a5b75762f33fb5f9eea96c7
SHA3-384 hash: 12b02eec7b5e639579856e56007b90f7c7b159746635706defca07c17d3c354cb7850d35d49775bd286b38305670144e
SHA1 hash: 44d2b7a9f40d23248cedabc45523f60294ac18a1
MD5 hash: 4b4bde5344557214f4c6b4a07f5242f0
humanhash: triple-table-jersey-nitrogen
File name:4b4bde5344557214f4c6b4a07f5242f0.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:2'034'176 bytes
First seen:2022-06-22 07:38:46 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 24576:BfMt6lTETIYQvvsalaLrIzUi2+WrDTOLK6fPcq9RfHEdxjLI2Jq68Iq:ha6lTErQvvsa8LrIzfJKUH4zJd
TLSH T1FD95C29D76812EB2C80527FA88935F9596E7C5660B22CF5748BC533B5F8B7840F603B2
TrID 61.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.0% (.SCR) Windows screen saver (13101/52/3)
8.8% (.EXE) Win64 Executable (generic) (10523/12/4)
5.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.2% (.EXE) Win16 NE executable (generic) (5038/12/1)
File icon (PE):PE icon
dhash icon 0c32696d556d393c (6 x Formbook)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
349
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/282232/
Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Сreating synchronization primitives
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/62b2c761e88d6da4ffbbc5fe/reports/8f3f5722-6eed-4d81-a9e9-f68a60e24ca3/overview
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.
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/3ca8a818-3ad9-4ec5-850f-74885e9d57ae
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1017726
Signature
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
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
Snort IDS alert for network traffic
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
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 650224 Sample: ifTEQpurhx.exe Startdate: 22/06/2022 Architecture: WINDOWS Score: 100 32 Snort IDS alert for network traffic 2->32 34 Malicious sample detected (through community Yara rule) 2->34 36 Multi AV Scanner detection for submitted file 2->36 38 6 other signatures 2->38 10 ifTEQpurhx.exe 3 2->10         started        process3 file4 28 C:\Users\user\AppData\...\ifTEQpurhx.exe.log, ASCII 10->28 dropped 50 Tries to detect virtualization through RDTSC time measurements 10->50 14 ifTEQpurhx.exe 10->14         started        signatures5 process6 signatures7 52 Modifies the context of a thread in another process (thread injection) 14->52 54 Maps a DLL or memory area into another process 14->54 56 Sample uses process hollowing technique 14->56 58 Queues an APC in another process (thread injection) 14->58 17 explorer.exe 14->17 injected process8 dnsIp9 30 www.baimaxinxi.com 154.208.102.209, 49819, 80 DXTL-HKDXTLTseungKwanOServiceHK Seychelles 17->30 40 System process connects to network (likely due to code injection or exploit) 17->40 42 Uses ipconfig to lookup or modify the Windows network settings 17->42 21 ipconfig.exe 17->21         started        signatures10 process11 signatures12 44 Modifies the context of a thread in another process (thread injection) 21->44 46 Maps a DLL or memory area into another process 21->46 48 Tries to detect virtualization through RDTSC time measurements 21->48 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/28fc7ef1aa47bbec6342320a56f7accc1bc57cf96a5b75762f33fb5f9eea96c7/
Threat name:
ByteCode-MSIL.Spyware.Noon
Create hunting rule
Status:
Malicious
First seen:
2022-06-22 07:19:16 UTC
File Type:
PE (.Net Exe)
Extracted files:
11
AV detection:
13 of 26 (50.00%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=fd6h54nki656yy2cgiffn55mzqn4k7hznjnxk5rpgp5v7hxks3dq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:f02e rat spyware stealer trojan
Link:
https://tria.ge/reports/220622-jgzcesagap/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Formbook Payload
Formbook
Unpacked files
SH256 hash:
2f6cfd6e244e4f7cf74f98a9dbb4380e60315b3c1bf51de3d4bc45ed5346c0af
MD5 hash:
647d3649f3ad477f016229d939a951fe
SHA1 hash:
a0e6d455cc77b5f131b6889b0b53b64757d935fa
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/68ec7206-ca7a-4d19-b62c-fea9eecb917d/
Parent samples :
8c6cf3dd51c256ea804a793af94fa9e62da8d3208d1ea25b11042ed9e021db6e
b98b36386c77a585d5b8f5a5d0e5bea1d7e4722e0ebf3e224284e12bd77ddbae
28fc7ef1aa47bbec6342320a56f7accc1bc57cf96a5b75762f33fb5f9eea96c7
11d6c53b493966f211c1c2bea054385dbb189f3505e237ca544488884a39562f
f65cab4e1be0cd94844f227bd7c5b2c0b875970973d271a0a2deaf0a700bfaed
a96a34c47ca8192a0e77c99c8993a08bc4f66824bb243f423db8632491df13a6
SH256 hash:
15457f24f0dda8e742f4be035b47afeb006bb0695180a83df6416465b0e948a6
MD5 hash:
2cc7780a7698a739ae1561dfd526747b
SHA1 hash:
a300fed6d6a0520d4bb9e3fed9e1a9b40b33f3bd
Link:
https://www.unpac.me/results/68ec7206-ca7a-4d19-b62c-fea9eecb917d/
SH256 hash:
a358e7977f237d9aeb647561bf0db1cf9daf3bf92d8f7664eff4400914563f50
MD5 hash:
3070a86f1be40ab698f26d6592538e0f
SHA1 hash:
2a71c4e5fe7dced8994a23fcc070515aece1a531
Link:
https://www.unpac.me/results/68ec7206-ca7a-4d19-b62c-fea9eecb917d/
SH256 hash:
0d8f5c8ec491b768b4a24b4004f4ef3d358b3fc22abbb1c429ee80e43f73bf8d
MD5 hash:
6297ff1b4376e8b2a1c0a0fbdc37ba83
SHA1 hash:
0c47b9a30a34d853379d073362d3d9e28a5997d7
Link:
https://www.unpac.me/results/68ec7206-ca7a-4d19-b62c-fea9eecb917d/
SH256 hash:
28fc7ef1aa47bbec6342320a56f7accc1bc57cf96a5b75762f33fb5f9eea96c7
MD5 hash:
4b4bde5344557214f4c6b4a07f5242f0
SHA1 hash:
44d2b7a9f40d23248cedabc45523f60294ac18a1
Link:
https://www.unpac.me/results/68ec7206-ca7a-4d19-b62c-fea9eecb917d/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/28fc7ef1aa47/report/overview.html
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/28fc7ef1aa47bbec6342320a56f7accc1bc57cf96a5b75762f33fb5f9eea96c7

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:exploit_any_poppopret
Create hunting rule
Author:Jeff White [karttoon@gmail.com] @noottrak
Description:Identify POP -> POP -> RET opcodes for quick ROP Gadget creation in target binaries.
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.

Web download

Formbook

Executable exe 28fc7ef1aa47bbec6342320a56f7accc1bc57cf96a5b75762f33fb5f9eea96c7

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2247149/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/282232/

Comments