MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f6a1cf040ecee307e3e5289f73b27664e33db21aaac5142e89b2a956934ae0c9. 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: f6a1cf040ecee307e3e5289f73b27664e33db21aaac5142e89b2a956934ae0c9
SHA3-384 hash: 8b814625c9e6c4468b1cce3e3435486f76396cb254ee58051b28d901540dab2b6f1e8262ea30798e43980b135ff57af3
SHA1 hash: 427ad90e6f9e40c447a66dedb344c788764cbf92
MD5 hash: b074bc8cc313c6fcafe448ae189de963
humanhash: red-illinois-cat-don
File name:PO210119.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'600'000 bytes
First seen:2021-01-19 07:54:51 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'747 x AgentTesla, 19'638 x Formbook, 12'244 x SnakeKeylogger)
ssdeep 24576:8hpTni/0TWIGsPgYUGwirx6FklAAaYknY:8zi/m17gYUnyIilAAa
Threatray 3'550 similar samples on MalwareBazaar
TLSH 4975F6993650B6DFC857CE368A681D60EBA0747A430BE303A05355EDDE4EA9BDF140F2
Reporter abuse_ch
Tags:exe FormBook geo KOR


Avatar
abuse_ch
Malspam distributing Formbook:

HELO: mail-smail-vm44.hanmail.net
Sending IP: 203.133.180.232
From: 아이구주 <guju@iguju.com>
Subject: 견적문의 드립니다.(권성록 입니다.)
Attachment: PO0170-PF3F-21-01-192T.cab (contains "PO210119.exe")

Intelligence

File Origin
# of uploads :
1
# of downloads :
170
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
PO210119.exe
Verdict:
Malicious activity
Analysis date:
2021-01-19 08:03:14 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/0136441d-9197-4490-aa25-cd58df2e2b11

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/112823/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Deleting a recently created file
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
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.
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/584632
Signature
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Found malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
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)
Modifies the prolog of user mode functions (user mode inline hooks)
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
Sigma detected: Scheduled temp file as task from temp location
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 schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM_3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 341354 Sample: PO210119.exe Startdate: 19/01/2021 Architecture: WINDOWS Score: 100 46 Found malware configuration 2->46 48 Malicious sample detected (through community Yara rule) 2->48 50 Multi AV Scanner detection for dropped file 2->50 52 9 other signatures 2->52 10 PO210119.exe 7 2->10         started        process3 file4 32 C:\Users\user\AppData\...\uczynErOwa.exe, PE32 10->32 dropped 34 C:\Users\...\uczynErOwa.exe:Zone.Identifier, ASCII 10->34 dropped 36 C:\Users\user\AppData\Local\...\tmp1E51.tmp, XML 10->36 dropped 38 C:\Users\user\AppData\...\PO210119.exe.log, ASCII 10->38 dropped 62 Detected unpacking (changes PE section rights) 10->62 64 Detected unpacking (overwrites its own PE header) 10->64 66 Tries to detect virtualization through RDTSC time measurements 10->66 68 Injects a PE file into a foreign processes 10->68 14 PO210119.exe 10->14         started        17 schtasks.exe 1 10->17         started        signatures5 process6 signatures7 70 Modifies the context of a thread in another process (thread injection) 14->70 72 Maps a DLL or memory area into another process 14->72 74 Sample uses process hollowing technique 14->74 76 Queues an APC in another process (thread injection) 14->76 19 explorer.exe 14->19 injected 23 conhost.exe 17->23         started        process8 dnsIp9 40 indyspirits.com 5.77.36.91, 49736, 80 IOMART-ASGB United Kingdom 19->40 42 www.sai-re.com 118.27.99.85, 49744, 80 INTERQGMOInternetIncJP Japan 19->42 44 6 other IPs or domains 19->44 54 System process connects to network (likely due to code injection or exploit) 19->54 25 mstsc.exe 19->25         started        signatures10 process11 signatures12 56 Modifies the context of a thread in another process (thread injection) 25->56 58 Maps a DLL or memory area into another process 25->58 60 Tries to detect virtualization through RDTSC time measurements 25->60 28 cmd.exe 1 25->28         started        process13 process14 30 conhost.exe 28->30         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/f6a1cf040ecee307e3e5289f73b27664e33db21aaac5142e89b2a956934ae0c9/
Threat name:
ByteCode-MSIL.Trojan.Taskun
Create hunting rule
Status:
Malicious
First seen:
2021-01-19 07:55:11 UTC
AV detection:
11 of 44 (25.00%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=62q46baoz3rqpy7ffcpxhmtwmtrt3mq2vlcrilujwkuvne2k4deq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
1b5004202a937dee50606dce53bcd34fb8b3dbff8a8d444bbd013d9076da4af5
Formbook
1b6a34ba043c45cfc63367a5a35d3c58b074d723c666d018b3c4c0d950e42b40
Formbook
2120a958805532d53821fb90eaaa140d8a6461f667b392e352311ff896465f46
Formbook
410e324656b57d2eb5e1c0eabbdbda34d787f346ab817f1afbc388ea615c2585
Formbook
5827618e631faa0da77858e8849358e5f1e811c62986700aa1f33cf4e26ce516
Formbook
699ca93661e2c1ba5dc75fa4c7041b23a4d24ebd9de3b5bdc6a0876863d00ea8
Formbook
7aa65f77c48841f9f1545c2e5bb7cb186cd259631c4c449400206f1bb3d16d5e
Formbook
c18baa3cb8b70de1dbfef5c58cbdcb15593b0ddc5424ec736b2d2a0b7a703b97
Formbook
d0c990414b2cde20ae0d9626766663a2287a454121786158644123abf5870d89
Formbook
f49e50532a7e5d312f8429c41e28848461651f671139a7590b64d9df029db998
Formbook
+ 3'540 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook rat spyware stealer trojan
Link:
https://tria.ge/reports/210119-wdghfmmxcx/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious use of UnmapMainImage
Suspicious use of SetThreadContext
Deletes itself
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.midnightblueinc.com/2kf/
Unpacked files
SH256 hash:
f97565ec848cbd571e1e4702f7007a932b65ef1d9709a2f51b196381bbd74733
MD5 hash:
1c39769851bf066784c416a68cb32f2d
SHA1 hash:
7dc878633ddf8763f4ccf356f67a27fae908d227
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/3611509b-1a3c-4167-b644-e51b5ab5eab0/
Parent samples :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 hash:
000d676c6a240bf1980a0cbde3befa5ec77a7f07ee2797951a826de4c8723830
MD5 hash:
cd22b6af4e3a7086b642ad4a5d43e559
SHA1 hash:
e16a48332d6001671f56679089bde34b99ef54b5
Link:
https://www.unpac.me/results/3611509b-1a3c-4167-b644-e51b5ab5eab0/
SH256 hash:
52d35fabfc97d3e903b5d9eb253e8f84d1dfee2967fa9dde6d6ca37cc61951c5
MD5 hash:
b5a7f2596efe4c5fc5f5d2c733d49259
SHA1 hash:
c121578124375dc293e4daf12fac22442a8131b6
Link:
https://www.unpac.me/results/3611509b-1a3c-4167-b644-e51b5ab5eab0/
SH256 hash:
f6a1cf040ecee307e3e5289f73b27664e33db21aaac5142e89b2a956934ae0c9
MD5 hash:
b074bc8cc313c6fcafe448ae189de963
SHA1 hash:
427ad90e6f9e40c447a66dedb344c788764cbf92
Link:
https://www.unpac.me/results/3611509b-1a3c-4167-b644-e51b5ab5eab0/
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/f6a1cf040ecee307e3e5289f73b27664e33db21aaac5142e89b2a956934ae0c9

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:crime_win32_ransom_avaddon_1
Create hunting rule
Author:@VK_Intel
Description:Detects Avaddon ransomware
Reference:https://twitter.com/VK_Intel/status/1300944441390370819

File information

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

Malspam

Formbook

cab 0205f18876a5d64c700f5882c45290d7aced9ed214e2341d714dac3f1f79ce2b

Formbook

Executable exe f6a1cf040ecee307e3e5289f73b27664e33db21aaac5142e89b2a956934ae0c9

(this sample)

  
Dropped by
MD5 1821fec781fb7dcc9cf8d984628b9bd4
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/112823/
  
Dropped by
SHA256 0205f18876a5d64c700f5882c45290d7aced9ed214e2341d714dac3f1f79ce2b

Comments