MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c383b5258941145e0402f4d3be4b2f0c19dbcb842f9d2954e1acf8806a1b9800. 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
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c383b5258941145e0402f4d3be4b2f0c19dbcb842f9d2954e1acf8806a1b9800
SHA3-384 hash: ff5c793c82158b47212b6deecef75b4a40eca335d69d61edad09edcc9d874cfd69b8a549a07ce7945a16eb771489a15e
SHA1 hash: 0bb274ae62bbab2a20827ff4f6e57b3173245f2c
MD5 hash: 1a712a0fc2242cb4474056e2636751c3
humanhash: gee-winter-fanta-tennis
File name:1a712a0fc2242cb4474056e2636751c3.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:860'672 bytes
First seen:2021-01-12 07:12:45 UTC
Last seen:2021-01-12 09:51:57 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'647 x AgentTesla, 19'451 x Formbook, 12'201 x SnakeKeylogger)
ssdeep 12288:RM/7jkPpsMx6onJnNamxrSXvotkXVLr7oGbnUbvOSFx1xeW:+/EhsMx6+s1XvZVboyS71
TLSH 4C05CF0421787F62E93C97F92605721983F9775F08EDE2B44CE270E311B9F865A90ADB
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
137
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
REQUEST FOR QUOTATION.xlsx
Verdict:
Malicious activity
Analysis date:
2021-01-12 06:15:31 UTC
Tags:
encrypted exploit CVE-2017-11882 trojan formbook stealer
Link:
https://app.any.run/tasks/9772f8cf-72ee-4d34-a689-8d8829928078

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/111405/
Detection(s):
SecuriteInfo.com.Trojan.Siggen11.57608.8961.9144.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Unauthorized injection to a recently created process
Creating a file
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/578788
Signature
.NET source code contains potential unpacker
Found malware configuration
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
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
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 AntiVM_3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 338442 Sample: yaQjVEGNEb.exe Startdate: 12/01/2021 Architecture: WINDOWS Score: 100 36 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->36 38 Found malware configuration 2->38 40 Malicious sample detected (through community Yara rule) 2->40 42 7 other signatures 2->42 10 yaQjVEGNEb.exe 3 2->10         started        process3 file4 28 C:\Users\user\AppData\...\yaQjVEGNEb.exe.log, ASCII 10->28 dropped 52 Tries to detect virtualization through RDTSC time measurements 10->52 14 yaQjVEGNEb.exe 10->14         started        signatures5 process6 signatures7 54 Modifies the context of a thread in another process (thread injection) 14->54 56 Maps a DLL or memory area into another process 14->56 58 Sample uses process hollowing technique 14->58 60 Queues an APC in another process (thread injection) 14->60 17 explorer.exe 14->17 injected process8 dnsIp9 30 180cliniconline.com 50.87.253.239, 49764, 80 UNIFIEDLAYER-AS-1US United States 17->30 32 www.soloseriolavoro.com 154.93.103.186, 49767, 80 POWERLINE-AS-APPOWERLINEDATACENTERHK Seychelles 17->32 34 8 other IPs or domains 17->34 44 System process connects to network (likely due to code injection or exploit) 17->44 21 mstsc.exe 17->21         started        signatures10 process11 signatures12 46 Modifies the context of a thread in another process (thread injection) 21->46 48 Maps a DLL or memory area into another process 21->48 50 Tries to detect virtualization through RDTSC time measurements 21->50 24 cmd.exe 1 21->24         started        process13 process14 26 conhost.exe 24->26         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c383b5258941145e0402f4d3be4b2f0c19dbcb842f9d2954e1acf8806a1b9800/
Threat name:
Win32.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-01-12 07:13:09 UTC
AV detection:
17 of 46 (36.96%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=yob3kjmjiekf4bac6tj34szpbqm5xs4ef6ossvhbvt4ia2q3taaa._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook rat spyware stealer trojan
Link:
https://tria.ge/reports/210112-px1mz3cr4n/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.bytecommunication.com/aky/
Unpacked files
SH256 hash:
c383b5258941145e0402f4d3be4b2f0c19dbcb842f9d2954e1acf8806a1b9800
MD5 hash:
1a712a0fc2242cb4474056e2636751c3
SHA1 hash:
0bb274ae62bbab2a20827ff4f6e57b3173245f2c
Link:
https://www.unpac.me/results/40d140ce-e87b-410c-ae62-065574d48eb5/
SH256 hash:
64a419709ad219ffc006bda776b650da486d55048d2fa34525f40227da0e5c86
MD5 hash:
88c0ec8398978fa2e4240f02765086ad
SHA1 hash:
5a5c4935b2d70e890c89ad9332365f4f4aa86f3c
Link:
https://www.unpac.me/results/40d140ce-e87b-410c-ae62-065574d48eb5/
SH256 hash:
d7f2a69ac7cea8319783c153a895b67840327b2418fd4bbfd14bd51bdb71e25e
MD5 hash:
54bf2e76c69fa506460d996af0eb1fd4
SHA1 hash:
df34b729ed0c0565ecee22f3425a00a2f5dd7881
Link:
https://www.unpac.me/results/40d140ce-e87b-410c-ae62-065574d48eb5/
SH256 hash:
c99cbd09cddd6b076a557626e34095b3ab0e6b41db656579787e43d77525b0d8
MD5 hash:
bc4aeaecf58db46c56cf775fb7eb062e
SHA1 hash:
4274fef9ff9dd3f4d933f847f6dfb8840342a90b
Link:
https://www.unpac.me/results/40d140ce-e87b-410c-ae62-065574d48eb5/
SH256 hash:
0886cb189a2501ed59a473228a47d17fb6b4e29f810bf3c7e995c82ecba4fc69
MD5 hash:
2ce3b24c2b9360453d217ca2c117d66f
SHA1 hash:
fa4b14d19c125b17ab197706a27e8ebd709bae1b
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/40d140ce-e87b-410c-ae62-065574d48eb5/
Parent samples :
c383b5258941145e0402f4d3be4b2f0c19dbcb842f9d2954e1acf8806a1b9800
fc4a97c809b221101e5bd66497e1c058c8b33913c336a74183c7d7f7caedc803
30dd3160b2a93b2b20726e2707ad4781b8e6e3802865fc1f0582a3b9eb1644e0
c58e2d245f99b53a5d4006c4f1daac8085b622eeab9958a576e7b82ae8e8380d
cf18069218b5b834227fa33133f629f24be9c582eeb0caaf0d7641520b1d9748
cc26bac0f47c7d3853f301243a6cca755b3eebd571133ddbb247998caa8d8682
02c0281a3070fbfa697f994301423a453091101f4c1c174360352e52e910642f
689ffe9ea264100eb4d4cac903a987565546976883721729f99ac40c049998e0
d8b5647390a41edddb0e0f20479a7723bf337ff86784335bb24decdb2a220a26
f730752f0004b350ae3feabc65cad92908079f4ced927cf320228621eec9bac8
6133a328e01379d6e45f954db62359ec9217b220a1e359253dd479bce7905b19
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Kryptik
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/c383b5258941145e0402f4d3be4b2f0c19dbcb842f9d2954e1acf8806a1b9800

File information

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

Web download

Formbook

Executable exe c383b5258941145e0402f4d3be4b2f0c19dbcb842f9d2954e1acf8806a1b9800

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/954598/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/111405/

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