MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 afac806262706aea36f8c34cb56ffa94f49da9b39b752cfd077f9b921e972c1d. 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: afac806262706aea36f8c34cb56ffa94f49da9b39b752cfd077f9b921e972c1d
SHA3-384 hash: 4503bcdb6a82ff527eeeb902cdc83b58d6c907b9036b459140cd4ca003d7c014a5d488b3a1e3740611cd5b75c1e29bd1
SHA1 hash: 25638b49edf7444005e1e02fb5d972da5920e1d8
MD5 hash: 5f19b9a3e41ef2e6ec3200bf4a246cec
humanhash: kitten-william-four-sixteen
File name:cK1g5gckZR9VHjj.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:445'440 bytes
First seen:2021-11-25 13:39:02 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'604 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:G/NdU0VixBFmkJ+W/wCCGBRG5F2ZBGutgq:G/vU0Vi1nJ+dCPukAuJ
Threatray 12'171 similar samples on MalwareBazaar
TLSH T11D940254937D5625CBAC4B7610AA9210A33E951BFE0EDB2D37C1B0282AE771387613DF
Reporter malwarelabnet
Tags:exe FormBook xloader

Intelligence

File Origin
# of uploads :
1
# of downloads :
155
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
cK1g5gckZR9VHjj.exe
Verdict:
Malicious activity
Analysis date:
2021-11-25 13:50:20 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/65e431db-9646-4c1f-bc47-a48ce22206e7

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Gathering data
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Сreating synchronization primitives
Searching for synchronization primitives
Unauthorized injection to a recently created process
Creating a file
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/619f91f8f36138de3f3c719a/reports/2b9d1b6d-fceb-4f5d-bbb9-e2c04eab968d/overview
Result
Verdict:
UNKNOWN
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/4d42cba3-d63a-4d4f-bbef-afcfadb3757d
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/896144
Signature
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
Found malware configuration
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)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
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
Uses netsh to modify the Windows network and firewall settings
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 528618 Sample: cK1g5gckZR9VHjj.exe Startdate: 25/11/2021 Architecture: WINDOWS Score: 100 30 www.pittsburghdata.center 2->30 38 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->38 40 Found malware configuration 2->40 42 Malicious sample detected (through community Yara rule) 2->42 44 5 other signatures 2->44 11 cK1g5gckZR9VHjj.exe 3 2->11         started        signatures3 process4 signatures5 58 Tries to detect virtualization through RDTSC time measurements 11->58 14 cK1g5gckZR9VHjj.exe 11->14         started        17 cK1g5gckZR9VHjj.exe 11->17         started        process6 signatures7 60 Modifies the context of a thread in another process (thread injection) 14->60 62 Maps a DLL or memory area into another process 14->62 64 Sample uses process hollowing technique 14->64 66 Queues an APC in another process (thread injection) 14->66 19 explorer.exe 14->19 injected process8 dnsIp9 32 www.qzttb.net 154.94.210.101, 49779, 80 ROOTNETWORKSUS Seychelles 19->32 34 www.dragonmodz.net 142.252.22.166, 49821, 80 EGIHOSTINGUS United States 19->34 36 3 other IPs or domains 19->36 46 System process connects to network (likely due to code injection or exploit) 19->46 48 Uses netsh to modify the Windows network and firewall settings 19->48 23 netsh.exe 19->23         started        signatures10 process11 signatures12 50 Self deletion via cmd delete 23->50 52 Modifies the context of a thread in another process (thread injection) 23->52 54 Maps a DLL or memory area into another process 23->54 56 Tries to detect virtualization through RDTSC time measurements 23->56 26 cmd.exe 1 23->26         started        process13 process14 28 conhost.exe 26->28         started       
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/afac806262706aea36f8c34cb56ffa94f49da9b39b752cfd077f9b921e972c1d/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-11-25 13:45:11 UTC
File Type:
PE (.Net Exe)
Extracted files:
18
AV detection:
22 of 28 (78.57%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=v6wiaytcobvounxyynglk372st2j3knttn2sz7ihp6nzehuxfqoq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
3b5e31e4b62087dfa7cac1a39c31896d25d465c971fe1db3e9a9271471ce416d
Formbook
3c9984e534636c34f7a22ccbbfb1c06baa5a6f16883eb77a65ac615dffa24f16
Formbook
4b50745e74fea6faa516b4d46b7c9fbe36fdae2301b76ec940635d033707a2c8
Formbook
6b7d061085da569762cabe1387c4aed2fe6fc1bac9634429b636a020122f77aa
Formbook
71d93edf8e5a5f7128dc660fa599a41c96059fee16983769adb91b3b8353294f
Formbook
b9b0ce10496a723998fd40bd2662d231e6135c465000d319b708736570d0bd09
Formbook
c04a6522c272316586333bdd0e1c78427b3dd04976d77e45d937fe763bea101f
Formbook
e10fd0e47f713f77031028a2c5525477154ad2f7f6500b9679bb00e6897535d3
Formbook
f0748cd86f2648c4ff23611f87661ba89045039966eb9595c2fb4d046249e1f2
Formbook
+ 12'161 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:udeh loader rat suricata
Link:
https://tria.ge/reports/211125-qxy5xsfdal/
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
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.spoiledzone.com/udeh/
Unpacked files
SH256 hash:
fb7ce776ed07a919d4fc20778ade6bdcebd0586b8e54238cac91f8e6b035b164
MD5 hash:
5e2137f9adeab0b5dce83b009bd3859c
SHA1 hash:
5df035c6689e0b4397647d0499f746085f42c882
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/0b421b62-5a32-4a99-b941-1cd1a0038668/
Parent samples :
afac806262706aea36f8c34cb56ffa94f49da9b39b752cfd077f9b921e972c1d
7f91403a34cde3f8a1d3a30a2cec9abfb30f5f7eb52f777af78fa0d34f7a27f9
SH256 hash:
f6639a3b21a09ca5e9e43e10f8ac7f822956232806805252096f03f68bc9815c
MD5 hash:
aa334e922c53c5cba0b43c342ac13b14
SHA1 hash:
68109327b5e98174293bb348dfea6a088cbd5d2f
Link:
https://www.unpac.me/results/0b421b62-5a32-4a99-b941-1cd1a0038668/
SH256 hash:
5234bd01327d1afff2755d2abcbfd9c36fa62d1e29c738fc98eb02a7d444a4c4
MD5 hash:
be5e6725e69d460cf1f35462d978b34a
SHA1 hash:
3974bb59bb8df11f84340aefb710cc730dde80ae
Link:
https://www.unpac.me/results/0b421b62-5a32-4a99-b941-1cd1a0038668/
SH256 hash:
afac806262706aea36f8c34cb56ffa94f49da9b39b752cfd077f9b921e972c1d
MD5 hash:
5f19b9a3e41ef2e6ec3200bf4a246cec
SHA1 hash:
25638b49edf7444005e1e02fb5d972da5920e1d8
Link:
https://www.unpac.me/results/0b421b62-5a32-4a99-b941-1cd1a0038668/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/afac80626270/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.85
Link:
https://yomi.yoroi.company/submissions/afac806262706aea36f8c34cb56ffa94f49da9b39b752cfd077f9b921e972c1d

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.

Cape
Cape
https://www.capesandbox.com/analysis/209375/

Comments