MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 fb1efc79e627fcc4485b3bbde9d948f673172715a7fb165f373f79ba31671fb8. 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: 9


Intelligence 9 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: fb1efc79e627fcc4485b3bbde9d948f673172715a7fb165f373f79ba31671fb8
SHA3-384 hash: 1e00f0ea9c229c5362489f57f65833ef7f79adb525cd6824d190df1139324df19a94d0aba099423d13bd334aa80b9a64
SHA1 hash: caef80bbc683d0ac1f149ac1700061dde682c47e
MD5 hash: ce84983fc8517fed6daada4ebd4ddee5
humanhash: network-bulldog-fifteen-edward
File name:ce84983fc8517fed6daada4ebd4ddee5.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'416'192 bytes
First seen:2021-03-08 14:00:27 UTC
Last seen:2021-03-08 16:03:46 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 24576:CR4oMes8ERNDWqeUayGz+u1beIf1dOGbTTSB4S5Tt:CRKRIUzGz1Ks1hb/O4S5Tt
Threatray 3'151 similar samples on MalwareBazaar
TLSH 1D65AD09FB55AF96E00D0F7AC617811842F8C063A777F36B3AD4ACE59920B5A4E0F497
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
110
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
ce84983fc8517fed6daada4ebd4ddee5.exe
Verdict:
Malicious activity
Analysis date:
2021-03-08 14:03:55 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/0133c83d-c85c-4df5-840f-2086ae3674fa

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/122792/
Detection(s):
SecuriteInfo.com.ArtemisCE84983FC851.1492.11763.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
DNS request
Sending a UDP request
Sending a custom TCP request
Creating a window
Creating a file in the %temp% directory
Creating a file in the %AppData% subdirectories
Creating a process from a recently created file
Creating a file
Unauthorized injection to a recently created process
Enabling autorun by creating a file
Result
Verdict:
SUSPICIOUS
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/631256
Signature
.NET source code contains very large array initializations
C2 URLs / IPs found in malware configuration
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
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
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: 364600 Sample: bDLs1AVbSd.exe Startdate: 08/03/2021 Architecture: WINDOWS Score: 100 36 Found malware configuration 2->36 38 Malicious sample detected (through community Yara rule) 2->38 40 Multi AV Scanner detection for dropped file 2->40 42 4 other signatures 2->42 11 bDLs1AVbSd.exe 15 8 2->11         started        process3 file4 30 C:\Users\user\AppData\Roaming\...\lex.exe, PE32 11->30 dropped 32 C:\Users\user\AppData\...\AddInProcess32.exe, PE32 11->32 dropped 34 C:\Users\user\...\lex.exe:Zone.Identifier, ASCII 11->34 dropped 54 Hides that the sample has been downloaded from the Internet (zone.identifier) 11->54 15 lex.exe 14 2 11->15         started        signatures5 process6 signatures7 56 Writes to foreign memory regions 15->56 58 Hides that the sample has been downloaded from the Internet (zone.identifier) 15->58 60 Injects a PE file into a foreign processes 15->60 18 AddInProcess32.exe 15->18         started        process8 signatures9 44 Modifies the context of a thread in another process (thread injection) 18->44 46 Maps a DLL or memory area into another process 18->46 48 Sample uses process hollowing technique 18->48 50 2 other signatures 18->50 21 explorer.exe 18->21 injected process10 process11 23 control.exe 21->23         started        signatures12 52 Tries to detect virtualization through RDTSC time measurements 23->52 26 cmd.exe 23->26         started        process13 process14 28 conhost.exe 26->28         started       
Gathering data
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-03-08 14:01:08 UTC
AV detection:
12 of 28 (42.86%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0ecfbf08398e1d0470c2f4d40a490808bd1b177cb60d674c5459d85f242952ab
Formbook
7298ca6edb5f8ea41d3d1cb2fd50768a50db1749e75c9a2f39a6dc1cd3a1ddf2
Formbook
72f30e8884110e06b133ecabfdbf523aef8cc5533273aa3e12afee785a5a45bc
Formbook
afeb708ad46713f215fe9e8bfada31b7b518fcd081f1592778d514fc41012d3f
Formbook
bf84393caee9b769b516681ec8998afe26c22255c405ea9a027608ccf38ea36b
Formbook
c7d7a05d604125b7c0ddfd95a1a7c7279ac93a002cc993bbad938b709469cc23
Formbook
d0b4ea79bfa3aad2d6343a52811b837c45229253cda7abb26b4df2107ab52d58
Formbook
dd62faf4995b64622a600017699ab4a601dd66027d3fc958d0b372e3d80a1353
Formbook
f12df428fa830292897aabb6f73c5ecf96e855e278c3320e21e45629c84bf9ef
Formbook
f3955ec185341df0ba244092025e241a6410a45f1700f406e61397ff40f94192
Formbook
+ 3'141 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/210308-58cxnyvar6/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Drops startup file
Loads dropped DLL
Executes dropped EXE
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.guanmei2020.com/dyt/
Unpacked files
SH256 hash:
fb1efc79e627fcc4485b3bbde9d948f673172715a7fb165f373f79ba31671fb8
MD5 hash:
ce84983fc8517fed6daada4ebd4ddee5
SHA1 hash:
caef80bbc683d0ac1f149ac1700061dde682c47e
Link:
https://www.unpac.me/results/dce3e082-6381-4419-be0b-d3de08f75a06/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.51
Link:
https://yomi.yoroi.company/submissions/fb1efc79e627fcc4485b3bbde9d948f673172715a7fb165f373f79ba31671fb8

File information

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

Web download

Formbook

Executable exe fb1efc79e627fcc4485b3bbde9d948f673172715a7fb165f373f79ba31671fb8

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1019427/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/122792/

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