MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4c20199af53476746b9169321c057437c7341c334d61f496820876d9feb63251. 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: 13


Intelligence 13 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4c20199af53476746b9169321c057437c7341c334d61f496820876d9feb63251
SHA3-384 hash: 27f8182d2a24cc05a4405fa8354bcd743a349ed63bb4a0d15f762b35fa6ca1f455f1ce0395f180b0a8ca3cf1da926bfb
SHA1 hash: 1fdf342b37fb0f6a3131d29752daf1861523e40d
MD5 hash: 37983cf849f7f7566b9572d57f0dab0f
humanhash: connecticut-xray-montana-autumn
File name:POSGORSGL2110210416.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:488'960 bytes
First seen:2021-10-22 10:23:51 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'609 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:/AGr1P6zxdW2LrBLlJksRUCjux4LZnZf8o:/LWxk2pXBLDX
Threatray 10'772 similar samples on MalwareBazaar
TLSH T1D2A4AE407A7C4E97C4A915FA8091D4810BF56C6B86AEF3C91ED374EE2EF6FC50682487
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
205
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/199360/
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.VFR-1.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a file in the %temp% directory
Delayed writing of the file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/61729145a9d585e6d5345b37/reports/06fe1856-8240-4dc1-be1b-88661b5cb588/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/0ccd73e1-7dcd-45d8-b0d8-6cfd6703489a
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/875156
Signature
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
Found malware configuration
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)
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
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 AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 507587 Sample: POSGORSGL2110210416.exe Startdate: 22/10/2021 Architecture: WINDOWS Score: 100 31 www.tutuum.com 2->31 39 Found malware configuration 2->39 41 Malicious sample detected (through community Yara rule) 2->41 43 Multi AV Scanner detection for submitted file 2->43 45 5 other signatures 2->45 11 POSGORSGL2110210416.exe 3 2->11         started        signatures3 process4 file5 29 C:\Users\user\...\POSGORSGL2110210416.exe.log, ASCII 11->29 dropped 57 Tries to detect virtualization through RDTSC time measurements 11->57 59 Injects a PE file into a foreign processes 11->59 15 POSGORSGL2110210416.exe 11->15         started        signatures6 process7 signatures8 61 Modifies the context of a thread in another process (thread injection) 15->61 63 Maps a DLL or memory area into another process 15->63 65 Sample uses process hollowing technique 15->65 67 Queues an APC in another process (thread injection) 15->67 18 explorer.exe 15->18 injected process9 dnsIp10 33 kairoslabs.online 160.153.136.3, 49800, 80 GODADDY-AMSDE United States 18->33 35 www.bestinvest-4-you.com 104.21.31.204, 49830, 80 CLOUDFLARENETUS United States 18->35 37 7 other IPs or domains 18->37 47 System process connects to network (likely due to code injection or exploit) 18->47 22 cscript.exe 18->22         started        signatures11 process12 signatures13 49 Self deletion via cmd delete 22->49 51 Modifies the context of a thread in another process (thread injection) 22->51 53 Maps a DLL or memory area into another process 22->53 55 Tries to detect virtualization through RDTSC time measurements 22->55 25 cmd.exe 1 22->25         started        process14 process15 27 conhost.exe 25->27         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4c20199af53476746b9169321c057437c7341c334d61f496820876d9feb63251/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-10-22 10:24:05 UTC
AV detection:
18 of 28 (64.29%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=jqqbtgxvgr3hi24rnezbyblug7dtihbtjvq7jfucbb3nt7vwgjiq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
08040f352684d740d9fa767c3315fb1636394dec01f35abe84ad7116cd735fb4
Formbook
3f95e7795f8c0b70983561a48425e735ef7832603543980f460b1356403ec622
Formbook
4c20199af53476746b9169321c057437c7341c334d61f496820876d9feb63251
Formbook
75772375acbcfb6cb668fc2449671a6a83afe1434184ac7c01fd895825fcf5e6
Formbook
909b2ca8fbea2b6c03ccf3d90e0416b12df094fcf02c47fbf59839a9ce105538
Formbook
a4c0f021f7b7e196e3a5d8e324cb4084c14941c94d2aab667eb886464948b44a
Formbook
a8ea6b5e7721a2d508d362f9e75fc38fe3b845375c358829ef0604cc2345aa13
Formbook
bec65782844355875f88723419b44dc543ba07b83c8a339036f79e39364493c6
Formbook
d079479dd85fb94fe08f6cd70cfff35e39c14294174a8ed6f9b480ffc1cbc9b2
Formbook
dd4af1effdd1081fccbd05d035c4dfac3b992a358e2a6a6140095d0385ca7f5e
Formbook
+ 10'762 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:k8u7 loader rat
Link:
https://tria.ge/reports/211022-mfczksbeb9/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Xloader Payload
Xloader
Malware Config
C2 Extraction:
http://www.ardisadr.online/k8u7/
Unpacked files
SH256 hash:
0061e9c8d485a6a02d4bd2f4bc76804070d6c05b42249d4fdea2b809c88bd25a
MD5 hash:
4b3ede182db57241b0b5ee8fc9ca9d3b
SHA1 hash:
68a56208f70d268e03e5f7616f854d66712cc0be
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/0aa2d340-adf1-4401-842b-06f0ebe46157/
Parent samples :
4c20199af53476746b9169321c057437c7341c334d61f496820876d9feb63251
a8ea6b5e7721a2d508d362f9e75fc38fe3b845375c358829ef0604cc2345aa13
9ab16c3b0caf257f8652d17d642c53cf2e8056f38f32f091fa23d6acfa4d5b8a
SH256 hash:
924971edd391379fbed851351b25e82db6b98027b25df3d1d060989fb34d0e95
MD5 hash:
1549de5ccfc4e742e92c951bafc0caeb
SHA1 hash:
e5b8e4e35a0bdedef012b3e3be35f6237c0b95c5
Link:
https://www.unpac.me/results/0aa2d340-adf1-4401-842b-06f0ebe46157/
SH256 hash:
0f3c96304bd17d7859ad64693d4dc8c3bdba631e2e0fe0f52791d1f97f229467
MD5 hash:
9a7dabe12e2dcedaccd868bf804709db
SHA1 hash:
47002de0de6c9bffa75c9f7e7f91a7385971ffde
Link:
https://www.unpac.me/results/0aa2d340-adf1-4401-842b-06f0ebe46157/
SH256 hash:
6fee24a1398bb022d0c5b9059b9b21e7636fc3861866a583d0e49b7d0ca56d58
MD5 hash:
36e2528c3cb3ad299ea481283687cdd6
SHA1 hash:
1981340bc7be1aa8f78f942fc6f0724838e35a87
Link:
https://www.unpac.me/results/0aa2d340-adf1-4401-842b-06f0ebe46157/
SH256 hash:
4c20199af53476746b9169321c057437c7341c334d61f496820876d9feb63251
MD5 hash:
37983cf849f7f7566b9572d57f0dab0f
SHA1 hash:
1fdf342b37fb0f6a3131d29752daf1861523e40d
Link:
https://www.unpac.me/results/0aa2d340-adf1-4401-842b-06f0ebe46157/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.65
Link:
https://yomi.yoroi.company/submissions/4c20199af53476746b9169321c057437c7341c334d61f496820876d9feb63251

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: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 4c20199af53476746b9169321c057437c7341c334d61f496820876d9feb63251

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/199360/

Comments