MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1d9958a0a083b0f134bf5c777e6cee112d30f6059e3f7d301cf78e3777b7a637. 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: 11


Intelligence 11 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 1d9958a0a083b0f134bf5c777e6cee112d30f6059e3f7d301cf78e3777b7a637
SHA3-384 hash: 0c429f5e7f154a4022c471f2371b985cf3df3c9474a0d7f6ff7603ad3e70b1015a1b9d619c4ed5b852da7440dd3c178d
SHA1 hash: 4c4431557488d1ed66b0b0b1f497c5d0503ff523
MD5 hash: c6ea4d854b4d2f5181925b2512585dca
humanhash: california-fourteen-alanine-alaska
File name:lednew.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:491'520 bytes
First seen:2020-10-13 10:36:56 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 6144:KfP65HsW7kFuG97mwIxeKg0xb5+aYVfpRipNnEYq91CDrxrcmOmCcmnQVS9yD8OC:KOHVywgE5+aCS7b4mOmQniDb
Threatray 3'235 similar samples on MalwareBazaar
TLSH BBA4BEF9798E0839F10D47719069B2C3F93E16C63F4C8E0D7E8A520C4D62A4B6B6665F
Reporter abuse_ch
Tags:exe FormBook Outlook


Avatar
abuse_ch
Malspam distributing unidentified malware:

HELO: EUR04-DB3-obe.outbound.protection.outlook.com
Sending IP: 40.92.74.107
From: alann_marks.sourcing01@outlook.com
Subject: Request for led Product
Attachment: lednew.r00 (contains "lednew.exe")

Intelligence

File Origin
# of uploads :
1
# of downloads :
102
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/70381/
Detection(s):
SecuriteInfo.com.ArtemisC6EA4D854B4D.25170.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a file in the %temp% subdirectories
Creating a window
Creating a file
Creating a process from a recently created file
Launching cmd.exe command interpreter
Unauthorized injection to a recently created process by context flags manipulation
Unauthorized injection to a recently created process
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/489508
Signature
.NET source code contains very large array initializations
Allocates memory in foreign processes
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)
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
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 297198 Sample: lednew.exe Startdate: 13/10/2020 Architecture: WINDOWS Score: 100 34 Malicious sample detected (through community Yara rule) 2->34 36 Multi AV Scanner detection for submitted file 2->36 38 Yara detected FormBook 2->38 40 3 other signatures 2->40 10 lednew.exe 8 2->10         started        process3 file4 26 C:\Users\user\AppData\...\InstallUtil.exe, PE32 10->26 dropped 28 C:\Users\user\AppData\...\lednew.exe.log, ASCII 10->28 dropped 30 C:\Users\user\AppData\...\AgileDotNetRT.dll, PE32 10->30 dropped 32 C:\Users\user\AppData\Local\Temp\...\D.dll, PE32 10->32 dropped 48 Writes to foreign memory regions 10->48 50 Allocates memory in foreign processes 10->50 52 Tries to detect virtualization through RDTSC time measurements 10->52 54 Injects a PE file into a foreign processes 10->54 14 InstallUtil.exe 10->14         started        signatures5 process6 signatures7 56 Modifies the context of a thread in another process (thread injection) 14->56 58 Maps a DLL or memory area into another process 14->58 60 Sample uses process hollowing technique 14->60 62 2 other signatures 14->62 17 explorer.exe 14->17 injected process8 process9 19 WWAHost.exe 17->19         started        signatures10 42 Modifies the context of a thread in another process (thread injection) 19->42 44 Maps a DLL or memory area into another process 19->44 46 Tries to detect virtualization through RDTSC time measurements 19->46 22 cmd.exe 1 19->22         started        process11 process12 24 conhost.exe 22->24         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/1d9958a0a083b0f134bf5c777e6cee112d30f6059e3f7d301cf78e3777b7a637/
Threat name:
Win32.Trojan.Wacatac
Create hunting rule
Status:
Suspicious
First seen:
2020-10-13 08:31:21 UTC
AV detection:
33 of 48 (68.75%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=dwmvrifaqoypcnf7lr3x43hocewtb5qfty7x2ma466hdo55xuy3q._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0538ad6e3f92ea13a5a3dadb18e807ce26097bbfd2f473e873a514b6dbbe8f5d
Formbook
145880ed94e0db3cab65cb54db4728520f1ac5f95ff2b0dda2650233542dd706
Formbook
6841a00603c067163259e142990659c0217ded69e2895d187fa65f9439034c7f
Formbook
82ec33dd4f26eab172d8a0fc536751d12153a3f7175351da311a7059217c670e
Formbook
914712c702b94abb26e0d1edbd54712d62a2fdb6cfbc9bd41ac8bcb84296358f
Formbook
b7859dd4f12959b0c3b717089ddde8f623d288e27d092d93b06afaf9fc4a51d8
Formbook
bd959929f72ad78adfc193a1b6f3951a41cb2fd273e97680ca41030c7c4ad271
Formbook
bfae046475f1458c460cf4eed534a48c8e769fbfc622138170c3945a4ad61a90
Formbook
d9600ffc9406d71c60b7eb036248230510c3b971a1de563ca7b8b57e822f7879
Formbook
e85f434810652692f3e0a0738d9156899afcbd2bed42a6f328f0092d72a1db34
Formbook
+ 3'225 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
rat trojan spyware stealer family:formbook
Link:
https://tria.ge/reports/201013-37eg7cqy4n/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Loads dropped DLL
Executes dropped EXE
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.elevatedqueensnc.com/ajr/
Unpacked files
SH256 hash:
1d9958a0a083b0f134bf5c777e6cee112d30f6059e3f7d301cf78e3777b7a637
MD5 hash:
c6ea4d854b4d2f5181925b2512585dca
SHA1 hash:
4c4431557488d1ed66b0b0b1f497c5d0503ff523
Link:
https://www.unpac.me/results/dba65901-ceae-48d1-9999-9c48d0d1d725/
SH256 hash:
19d9922060be89a70b76e5c0056e751f1baa5d41819235c92cf4f5d7668e1267
MD5 hash:
811864a0b06c529af894a7fec6ddbf47
SHA1 hash:
d35b82933eb06a6ec60e8cbbdb65eb6cdcaeb6d2
Link:
https://www.unpac.me/results/dba65901-ceae-48d1-9999-9c48d0d1d725/
Parent samples :
afa2f55e149097f9b250142bbfd94d9d56d10649c96adb079fdb0dfdac7c6660
69e2ae11e1b5cbe120bf02301191a1cf05e87fc09b09d63bd782abbf3615d05d
0b778873c94f6bc89a40294c0e85a38ab82509260cd2a2e8b73d00c5c90e8757
7ddfa6f44a60f4b894321f6977f8121cfb371c3c61ac872c58ba61fd5ee13deb
SH256 hash:
e3f3f21f1da73f127615d0ce7f20b1159facd9b5015ef223de73dddbcdf1f59a
MD5 hash:
7a4f8f06291d4cff66c36c4963e2d0e6
SHA1 hash:
dfe8b19e175fb63bd891664e11e9f7fa646f4bf1
Link:
https://www.unpac.me/results/dba65901-ceae-48d1-9999-9c48d0d1d725/
SH256 hash:
30140c3bf5874d7d184b15513016f9de1524ae95a5efe9a1cb15bad6d6936d64
MD5 hash:
03847d82611bc6461cbb99ca768828f1
SHA1 hash:
39859a3fd3326520dfd1ed10456bb227933a8871
Link:
https://www.unpac.me/results/dba65901-ceae-48d1-9999-9c48d0d1d725/
SH256 hash:
e46cb87ff92f77d6cc9b5a99a98811c4382473527feadf133901e5e5cbba003a
MD5 hash:
f52e22859e86b8b52b80a670775e4c8a
SHA1 hash:
40f1d3356dabf407d1bf8f04e163f6118ee44a2d
Link:
https://www.unpac.me/results/dba65901-ceae-48d1-9999-9c48d0d1d725/
SH256 hash:
100c549067629f2d7b6ae4d8cf6c7eba5bb4e289363bc0245b74c7c785ee7d2a
MD5 hash:
1073f46ac79ee90eb0caee896e83ea2a
SHA1 hash:
5735ae8f7ed82591f29bb46e297a83b445a494cf
Link:
https://www.unpac.me/results/dba65901-ceae-48d1-9999-9c48d0d1d725/
SH256 hash:
2e62cdc2bcfb40cfadfaaf8f15c5b2cb18d293240c40137506e593b309a2ad00
MD5 hash:
e9b4d866a5fce473853ebe67d7b44344
SHA1 hash:
5a90e25d4b630026faeb4df52f18b4d7ed0e32d7
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/dba65901-ceae-48d1-9999-9c48d0d1d725/
Parent samples :
0538ad6e3f92ea13a5a3dadb18e807ce26097bbfd2f473e873a514b6dbbe8f5d
145880ed94e0db3cab65cb54db4728520f1ac5f95ff2b0dda2650233542dd706
bfae046475f1458c460cf4eed534a48c8e769fbfc622138170c3945a4ad61a90
b7859dd4f12959b0c3b717089ddde8f623d288e27d092d93b06afaf9fc4a51d8
1d9958a0a083b0f134bf5c777e6cee112d30f6059e3f7d301cf78e3777b7a637
5c5f5e9cd06c7c7da03edfc2cd3dd6d45cfdcb5fe1b8e1fbb26fa63c264eb3b6
SH256 hash:
81aa6f1ccdcd23a88843839cbafd12b37ae1d388059742f1daebac0ac84c08e3
MD5 hash:
dd1720823b97d16080e76347d357787f
SHA1 hash:
ee141b31d21ab2c2445ec5d9b6ae35e511de8afb
Link:
https://www.unpac.me/results/dba65901-ceae-48d1-9999-9c48d0d1d725/
SH256 hash:
29d2261b825ee5e71962cd2a6371636473821ac08b600ed00de97403db179fa5
MD5 hash:
b44411014d1ab26dd8ede58dd560ef90
SHA1 hash:
fc61f71da27aeb959d6868fb5e8964a0e96f59a9
Link:
https://www.unpac.me/results/dba65901-ceae-48d1-9999-9c48d0d1d725/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.80
Link:
https://yomi.yoroi.company/submissions/1d9958a0a083b0f134bf5c777e6cee112d30f6059e3f7d301cf78e3777b7a637

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:Formbook
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:autogenerated rule brought to you by yara-signator
Rule name:win_formbook_g0
Create hunting rule
Author:Slavo Greminger, SWITCH-CERT

File information

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

Malspam

Formbook

r00 0800b28dde9fd23fddb138c7499a1318e19d77d411fe8d39bdc4c49b8601077c

Formbook

Executable exe 1d9958a0a083b0f134bf5c777e6cee112d30f6059e3f7d301cf78e3777b7a637

(this sample)

  
Dropped by
MD5 2e473f028f99765a43874b5237246462
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/70381/
  
Dropped by
SHA256 0800b28dde9fd23fddb138c7499a1318e19d77d411fe8d39bdc4c49b8601077c

Comments