MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 81626ff8f2f5eb89a55ac197d51ab0d35c33e0607c9fd2a7077ac834a1a5c926. 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
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 81626ff8f2f5eb89a55ac197d51ab0d35c33e0607c9fd2a7077ac834a1a5c926
SHA3-384 hash: eff8a0731732310910a7e511c66dbbd60f76e486af54778d3f8d0357909c9ee1c1c4c06a064357749eaee370e5bc3c76
SHA1 hash: ed53ece522fe5ef3bf45a5d3faaf69e20466a826
MD5 hash: 94608f5e437c4e3ace2481dc34b4c2ec
humanhash: bakerloo-angel-lima-jig
File name:Quotation-pdf-scan-copy.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'418'752 bytes
First seen:2022-03-28 11:18:07 UTC
Last seen:2022-03-28 11:48:51 UTC
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:YzJ22jjAAIWO6P5Cz0jDd9F50pqMfKituhEZMtfMx:U22jjdOUDrb0p1GT
Threatray 14'703 similar samples on MalwareBazaar
TLSH T106657B98325071DEC467C972CDA81CECAA607C665F1BC207A053329E9A7DA97CF146F3
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
218
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/258580/
Detection(s):
SecuriteInfo.com.Scr.Malcodegdn30.12822.21614.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Сreating synchronization primitives
Creating a process from a recently created file
Creating a process with a hidden window
Creating a file in the %temp% directory
Launching a process
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
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
explorer.exe obfuscated packed replace.exe update.exe
Link:
https://www.filescan.io/uploads/624199a81f2042394841a3dd/reports/c7ef7348-7b11-4721-addb-190942e8a3b4/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/faac7961-157d-4581-9505-27ac4c9fad2c
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/965773
Signature
Adds a directory exclusion to Windows Defender
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
Initial sample is a PE file and has a suspicious name
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)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
Sigma detected: Suspicious Add Scheduled Task From User AppData Temp
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 AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 598255 Sample: Quotation-pdf-scan-copy.exe Startdate: 28/03/2022 Architecture: WINDOWS Score: 100 42 Found malware configuration 2->42 44 Malicious sample detected (through community Yara rule) 2->44 46 Antivirus detection for URL or domain 2->46 48 9 other signatures 2->48 9 Quotation-pdf-scan-copy.exe 7 2->9         started        process3 file4 34 C:\Users\user\AppData\...\UvKNlnkSbm.exe, PE32 9->34 dropped 36 C:\Users\...\UvKNlnkSbm.exe:Zone.Identifier, ASCII 9->36 dropped 38 C:\Users\user\AppData\Local\...\tmp5B5A.tmp, XML 9->38 dropped 40 C:\Users\...\Quotation-pdf-scan-copy.exe.log, ASCII 9->40 dropped 52 Uses schtasks.exe or at.exe to add and modify task schedules 9->52 54 Adds a directory exclusion to Windows Defender 9->54 56 Tries to detect virtualization through RDTSC time measurements 9->56 13 Quotation-pdf-scan-copy.exe 9->13         started        16 powershell.exe 25 9->16         started        18 schtasks.exe 1 9->18         started        signatures5 process6 signatures7 66 Modifies the context of a thread in another process (thread injection) 13->66 68 Maps a DLL or memory area into another process 13->68 70 Sample uses process hollowing technique 13->70 72 Queues an APC in another process (thread injection) 13->72 20 explorer.exe 13->20 injected 22 conhost.exe 16->22         started        25 conhost.exe 18->25         started        process8 signatures9 27 control.exe 20->27         started        50 Self deletion via cmd delete 22->50 30 cmd.exe 1 25->30         started        process10 signatures11 58 Self deletion via cmd delete 27->58 60 Modifies the context of a thread in another process (thread injection) 27->60 62 Maps a DLL or memory area into another process 27->62 64 Tries to detect virtualization through RDTSC time measurements 27->64 32 conhost.exe 30->32         started        process12
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/81626ff8f2f5eb89a55ac197d51ab0d35c33e0607c9fd2a7077ac834a1a5c926/
Threat name:
ByteCode-MSIL.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2022-03-28 16:34:38 UTC
AV detection:
20 of 26 (76.92%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=qfrg76hs6xvytjk2ygl5kgvq2nodhydapsp5fjyhpledjinfzeta._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
2c81b04d9509cf29e05309b84972fa9bf47b34bdf64032ade464fcc55a54a1b8
Formbook
3e3ccb3b130c86bb2d82a52f8a7e191efa9499577ba0a3d3f335d5a1e1597b76
Formbook
9cfa1deda62a35bf8c2211bf4c1996d880c84c4242308a5d74403a570d70e066
Formbook
d0d6b8f342215efb1adba27088bb7f6dfe14dd3734612aecf1124b121c3a7cc6
Formbook
d61835164215f1881467e717012874796721d02a9995733190b7d831733754c6
Formbook
de9fdb344c542595de3ddf65357a6982f0085d0f7b42c1de534c3963134c2cb3
Formbook
e4d0ebfd2e92b3848aa302ff71782e2bb7b55b1340f340c89e263e9d1a2a6987
Formbook
f199872c7181357c0f97b1c5415251a41b0588af401461f319fafe94b2ed4653
Formbook
+ 14'693 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:o0i7 rat spyware stealer trojan
Link:
https://tria.ge/reports/220328-netrdahfg4/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Suspicious use of SetThreadContext
Checks computer location settings
Formbook Payload
Formbook
Unpacked files
SH256 hash:
0dd9623e53597656bf225ec182197137b77b54f475f386f57b563ea9d2f7d243
MD5 hash:
d81057c81549d2d721394f92d36dc407
SHA1 hash:
77405f30b5b7a678b2f23b65ee5805c5e31ae031
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/e4bf4033-1fcf-4598-b0d4-44621e4aa0c8/
Parent samples :
633caade7dd7f37b7795be2142a7f0ef66259b65b1095b23a2070f02446f8414
e92ff5ee8d681a705f2fe24cd61375479b2221cf29738439839ce8ee5f3f9c5f
41573d104263a727eca5295cd59bf91c93d2a24ddb024d84f97244bc120036e2
81626ff8f2f5eb89a55ac197d51ab0d35c33e0607c9fd2a7077ac834a1a5c926
6b9529ef9582e73d4ac7bc63d46bd152a1bc894ce781308b8798ea9689312e60
0082123fa15fb43d060c2f764bdd9f31a19e53b185e5f6de37d1dfec2f59504f
91bde3e248b2850a4c78027106d8b4c0b6ba2604fd08a0a14fb45b8a1b285611
ca7d37a30904725a82277567c30ba0fe5b441dad6d86d48afc3a954e8fdbd78f
044dd751a59cd849c84966a8ec5a6f65435cbd39af7696029a3ef2583819d1f4
SH256 hash:
613b2819d35360cbfe6c94b2b998d1a4998c89f5bdef505e0e158e1288ab684c
MD5 hash:
3096cbaf4b5d40f9c61bf7ce13fde62f
SHA1 hash:
6b3c580e51fd306bfdc2e727ca3bc7805aba4b53
Link:
https://www.unpac.me/results/e4bf4033-1fcf-4598-b0d4-44621e4aa0c8/
SH256 hash:
55070626b52c6586790d19dfccbd87b883083cc19395f2f6329a2269d47a379f
MD5 hash:
ee9ef3b84ecbf351d42cabd70bda6c7e
SHA1 hash:
4d853338e3417e31fef7083e71118ab4d7e4b76c
Link:
https://www.unpac.me/results/e4bf4033-1fcf-4598-b0d4-44621e4aa0c8/
SH256 hash:
1be59a652c75b4435bf17ec2380c6c4f1c4d53c43ff0befee22fdd19c81aa292
MD5 hash:
0576d30006233dae120d585585cd453a
SHA1 hash:
2e6b8b20e8a36ad1a207dc9715dfe04720bbee6c
Link:
https://www.unpac.me/results/e4bf4033-1fcf-4598-b0d4-44621e4aa0c8/
SH256 hash:
81626ff8f2f5eb89a55ac197d51ab0d35c33e0607c9fd2a7077ac834a1a5c926
MD5 hash:
94608f5e437c4e3ace2481dc34b4c2ec
SHA1 hash:
ed53ece522fe5ef3bf45a5d3faaf69e20466a826
Link:
https://www.unpac.me/results/e4bf4033-1fcf-4598-b0d4-44621e4aa0c8/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/81626ff8f2f5/report/overview.html
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/81626ff8f2f5eb89a55ac197d51ab0d35c33e0607c9fd2a7077ac834a1a5c926

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: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.

Malspam

Formbook

Executable exe 81626ff8f2f5eb89a55ac197d51ab0d35c33e0607c9fd2a7077ac834a1a5c926

(this sample)

  
Dropped by
formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/258580/

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