MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a1fda3d25de841c11ff5dae7f624462a8ee8b66ad97ead52b2d69f88875c3e5a. 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 File information Comments
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SHA256 hash: a1fda3d25de841c11ff5dae7f624462a8ee8b66ad97ead52b2d69f88875c3e5a
SHA3-384 hash: fcfbc8a4d52ce9ab1f3d9b9f5cb6337669ad1894ef9976912710fbeceda68694a27e444403dc3ed17d199643dc84306e
SHA1 hash: 0f976a735397d0a62338da376def67fa498d6d09
MD5 hash: 7866b1b77f6a23065daf812b78f4581b
humanhash: blue-jersey-twelve-social
File name:BANK SLIP_WOOHYUN GREEN_HOCHIMINH_EPDA_.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:584'192 bytes
First seen:2022-07-04 03:58:16 UTC
Last seen:2022-07-04 04:33:42 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:KZ08rb8jMufghrhvzT+eq9s13KF2CnAR/zSA0RrE8XN9d:Rghrhbqe/aRnJy8X/d
TLSH T19FC4023E4BA4DE2AC63E177D5055211503B0A6463243EB7F9648B5F92BB3341CB23BA7
TrID 64.2% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.5% (.SCR) Windows screen saver (13101/52/3)
9.2% (.EXE) Win64 Executable (generic) (10523/12/4)
5.7% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.9% (.EXE) Win32 Executable (generic) (4505/5/1)
Reporter GovCERT_CH
Tags:exe FormBook xloader

Intelligence

File Origin
# of uploads :
2
# of downloads :
293
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Trojan.Olock.1.30051.16174.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/62c265a3a9394d642147268d/reports/b8faac5b-8f85-40f5-a086-d374b2312a28/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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/943b2ddf-69c7-4527-b2c1-3b03c61085f1
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1023836
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
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)
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
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 656331 Sample: BANK SLIP_WOOHYUN GREEN_HOC... Startdate: 04/07/2022 Architecture: WINDOWS Score: 100 29 www.albertoalaniz.space 2->29 31 www.smartmindstutorials.com 2->31 47 Snort IDS alert for network traffic 2->47 49 Malicious sample detected (through community Yara rule) 2->49 51 Antivirus detection for URL or domain 2->51 53 8 other signatures 2->53 10 BANK SLIP_WOOHYUN GREEN_HOCHIMINH_EPDA_.exe 3 2->10         started        signatures3 process4 file5 27 BANK SLIP_WOOHYUN ...IMINH_EPDA_.exe.log, ASCII 10->27 dropped 55 Injects a PE file into a foreign processes 10->55 14 BANK SLIP_WOOHYUN GREEN_HOCHIMINH_EPDA_.exe 10->14         started        signatures6 process7 signatures8 57 Modifies the context of a thread in another process (thread injection) 14->57 59 Maps a DLL or memory area into another process 14->59 61 Sample uses process hollowing technique 14->61 63 Queues an APC in another process (thread injection) 14->63 17 mstsc.exe 14->17         started        20 explorer.exe 14->20 injected process9 dnsIp10 39 Modifies the context of a thread in another process (thread injection) 17->39 41 Maps a DLL or memory area into another process 17->41 43 Tries to detect virtualization through RDTSC time measurements 17->43 23 cmd.exe 1 17->23         started        33 www.katescakesandcreations.com 103.224.212.221, 49845, 80 TRELLIAN-AS-APTrellianPtyLimitedAU Australia 20->33 35 d113wxp.yb550.com 66.203.153.94, 49841, 80 DNC-ASDimensionNetworkCommunicationLimitedHK Hong Kong 20->35 37 8 other IPs or domains 20->37 45 System process connects to network (likely due to code injection or exploit) 20->45 signatures11 process12 process13 25 conhost.exe 23->25         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a1fda3d25de841c11ff5dae7f624462a8ee8b66ad97ead52b2d69f88875c3e5a/
Threat name:
ByteCode-MSIL.Trojan.FormBook
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Status:
Malicious
First seen:
2022-07-04 01:56:26 UTC
File Type:
PE (.Net Exe)
Extracted files:
6
AV detection:
20 of 26 (76.92%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=uh62hus55ba4ch7v3lt7mjcgfkhorntk3f7k2uvs22pyrb24hzna._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
xloader
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Score:
  10/10
Tags:
family:xloader campaign:a2es loader persistence rat spyware stealer suricata
Link:
https://tria.ge/reports/220704-ej3emsedfp/
Behaviour
Enumerates system info in registry
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
Drops file in Program Files directory
Suspicious use of SetThreadContext
Adds Run key to start application
Deletes itself
Reads user/profile data of web browsers
Adds policy Run key to start application
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
Unpacked files
SH256 hash:
ae5dd0a7fc20901973744dacd5ca578abf254cd8d8641b9a0e24826db97f953f
MD5 hash:
582a38cd558a01e3c0b65c405430e5af
SHA1 hash:
d76316fd02714d58f2d5628622e344acdd721215
Detections:
win_formbook_g0
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win_formbook_auto
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XLoader
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Link:
https://www.unpac.me/results/9f1b5d24-ce2f-4c1d-8438-fe8459c75fdf/
Parent samples :
b138102457454a3101f17bba4da29d991c4330f387df3d0db2165aaabee608d2
0793dfe009772f771270e113edc94fc7a19fa5d7f53a3e858f9775319b9d536e
98f3a321eecbb419352f9ecbf3ef45a404ee280d18aa148c4e1dc80867cc09a2
00509d2de60dcdf523ea44b90e5dbbb510f6298bcd9810686ea625d33160176e
b326a836015d646984f10a251e4b6678a9822a1f365369512b80f0928b35299d
f6c20c48de3ffdb54b94206a36926206993732ee873b0e0916e417ff93e9f878
7ead9b6c89ec926f1b8f0f793e305315f9bc59876e14b57653e47f336648eafc
25773608894ed7dced5dd50dc02483ffdd6d9ee3d79333aa8292c5d2a2586e21
a1fda3d25de841c11ff5dae7f624462a8ee8b66ad97ead52b2d69f88875c3e5a
29706d5927c63e4ef3241012c1a81d1ca0382fbaa05d7f115c39184a03c598c3
f6b709d4d41b801c2f5df85f05f3396ab9a2d0b1851ebdc5e434b03c184dacd6
765c9f36ef8ac4c126c700a74d79f85ad6f02cc7e3539c1f79337efd9fd21bf6
329aff3de19577cdf2a9cba76a69b538280b0984577226b52ed9eeb193bbe0e7
05400e2e332ef1360d0e1a85c751d4e33e1269e7d5087ea695fe53b62180a121
215e5a85cc6a627b1abdf8744a7b20c3c3f2663ec5e59264d40679f004d4eca0
SH256 hash:
70bb4f8aa7d0a33f8206f78c845fa2bd686c2a0f2b3bd50cd0b6b887a45398ca
MD5 hash:
30d61a3a3e26c2bca2eb766990132d7c
SHA1 hash:
94f9742d5f21b13f7d8d194fe938193cbb6a0d4d
Link:
https://www.unpac.me/results/9f1b5d24-ce2f-4c1d-8438-fe8459c75fdf/
SH256 hash:
3b59fe180dd50e3f3d4fdcbdd4e7a2d4e3e1c85ae43cb4f3716c4be41e9ec2ae
MD5 hash:
9ea556e333e216a65aa09c102f36004f
SHA1 hash:
814c07f1dc68bd61840384aac3aa8346d9f8148f
Link:
https://www.unpac.me/results/9f1b5d24-ce2f-4c1d-8438-fe8459c75fdf/
SH256 hash:
2135c9f2492d2761dea8f874f4264576ebdf5866dc9541662c1a38ee1367d77e
MD5 hash:
93cd17f77118b6ef8d4c069fa24d64c9
SHA1 hash:
40234b3ce50d02f5795cdf5010e359afccd3e97a
Link:
https://www.unpac.me/results/9f1b5d24-ce2f-4c1d-8438-fe8459c75fdf/
SH256 hash:
76f299e7cade9f55f587463cd5d65c233782976e543630f02a0470bb979b5396
MD5 hash:
b97d1e5b31333bb00281609f7fdf3e1b
SHA1 hash:
2e685c10d4a42ccaddc0d307f5e37d5600c63de4
Link:
https://www.unpac.me/results/9f1b5d24-ce2f-4c1d-8438-fe8459c75fdf/
SH256 hash:
a1fda3d25de841c11ff5dae7f624462a8ee8b66ad97ead52b2d69f88875c3e5a
MD5 hash:
7866b1b77f6a23065daf812b78f4581b
SHA1 hash:
0f976a735397d0a62338da376def67fa498d6d09
Link:
https://www.unpac.me/results/9f1b5d24-ce2f-4c1d-8438-fe8459c75fdf/
Malware family:
XLoader
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a1fda3d25de8/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.

File information

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

Malspam

Formbook

Executable exe a1fda3d25de841c11ff5dae7f624462a8ee8b66ad97ead52b2d69f88875c3e5a

(this sample)

  
Dropped by
xloader
  
Delivery method
Distributed via e-mail attachment

Comments