MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 220508aa28bcd902b7513ee7187ffc10487ecae6e77d9446f17216473fc5fb61. 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: 220508aa28bcd902b7513ee7187ffc10487ecae6e77d9446f17216473fc5fb61
SHA3-384 hash: 81f547516c3e58ca1d57c7702226cd73f855063b1f7aa9b5119ceccc071a2d80d17ce82cd8ddb3d59bc0270b139e9716
SHA1 hash: 42891547c002e9f4120f68057c4e0809b46cedad
MD5 hash: 503186f55d4cc1dd1e4e1c87106b7700
humanhash: skylark-purple-gee-potato
File name:220508aa28bcd902b7513ee7187ffc10487ecae6e77d9446f17216473fc5fb61
Download: download sample
Signature Formbook
Create hunting rule
File size:758'784 bytes
First seen:2025-12-08 14:59:14 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:sTQ/czGRkgePEqcq+h/zCyzYZk54Qyvuxa7wTDFhe/nRHvYI5tp2ok1H9V8u1rfw:6Q/6Gug3qc55zJEZgDyvuEcTJhefRHvb
Threatray 2'224 similar samples on MalwareBazaar
TLSH T1E2F4125AA25AEB03C5560FF41931E2B44375AEADE422D3069EEABCCFF43E7448541783
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10522/11/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
68
Origin country :
HU HU
Vendor Threat Intelligence
Malware configuration found for:
FormBook RoboSki
Details
FormBook
a decrypted component and its RC4 key
RoboSki
a Base64 + XOR/Sub-decrypted component, its associated key, a mutex, a filename, and ReZer0 configuration parameters including: a load type, a download URL and filename (if configured), an interval (if configured), and varying flags
RoboSki
an extracted ReZer0 payload
Link:
https://research.acce.ciphertechsolutions.com/results/17b0bb36-7f6e-476e-ab31-b2c4bb18fdf5/
Malware family:
n/a
ID:
1
File name:
220508aa28bcd902b7513ee7187ffc10487ecae6e77d9446f17216473fc5fb61
Verdict:
No threats detected
Analysis date:
2025-12-08 19:00:10 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/13833b7b-4bc7-4c51-b0a6-73255ce951ba

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/43272/
Detection(s):
SecuriteInfo.com.Trojan.Siggen32.7738.28566.18122.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6936e889881313558a2b89e8
Tags:
virus shell msil
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/220508aa28bcd902b7513ee7187ffc10487ecae6e77d9446f17216473fc5fb61
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-11-14T07:48:00Z UTC
Last seen:
2025-12-10T10:20:00Z UTC
Hits:
~1000
Link:
https://opentip.kaspersky.com/220508aa28bcd902b7513ee7187ffc10487ecae6e77d9446f17216473fc5fb61/results?tab=lookup
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/d0c4eec0-98c5-4eb8-a9d5-ac4434975267
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/220508aa28bcd902b7513ee7187ffc10487ecae6e77d9446f17216473fc5fb61
Verdict:
inconclusive
YARA:
10 match(es)
Tags:
.Net Executable Managed .NET PDB Path PE (Portable Executable) PE File Layout SOS: 0.37 Win 32 Exe x86
Link:
https://app.malva.re/file/503186f55d4cc1dd1e4e1c87106b7700
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/220508aa28bcd902b7513ee7187ffc10487ecae6e77d9446f17216473fc5fb61/
Threat name:
ByteCode-MSIL.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2025-11-14 10:39:34 UTC
AV detection:
17 of 24 (70.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=eicqrkrixtmqfn2rh3trq774cbeh5sxg456zirxroileop6f7nqq._file
Verdict:
malicious
Label(s):
unc_loader_037
Create hunting rule
Similar samples:
23992ab41872ac21dcd499a48a743e51afa43d873d8564a95f03f4a639d3bfbc
Formbook
301700358a42c5d078221f9d13d483ad9d1498eaa3dc547ff3aec4c41237f97e
Formbook
3b1fe8fbb2e89bed49f8cfcb3d111e0b0f7a2db9dd9d18dac5d232b610572190
Formbook
3f86948114dd8e8498ad2e0ce156760986c2ee6bc3318ff3bf05dd97a9782406
Formbook
7be16d08f76a1f88d6ff634df15d045d532e8a7b67827e21f4c7d71f37f3718b
Formbook
8ec0ad44c95b1b7190a2fcae723d0189bc0c814e08244b974c0e9fe51b19bd03
Formbook
b27f17a52b7a491a0887307a8e4984f283b8076c1e49d535863068c51758c8bc
Formbook
cfc678a99a6bce4180cfe2bc45861694cca244977b850691a04737251c8bef30
Formbook
e33cb23b65d7b1b744b2e12f438cf192f2c58431a4e7f42c7c99899dbaf06dad
Formbook
error
Formbook
+ 2'214 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook discovery execution rat spyware stealer trojan
Link:
https://tria.ge/reports/251208-scy1jadm3z/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Command and Scripting Interpreter: PowerShell
Formbook payload
Formbook
Formbook family
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/e6129875-ba9d-4050-8144-21dcc9ef03a2
Unpacked files
SH256 hash:
4755144f82a4a3fa80f43be3df88153647eb21497ca3dc4f025a1153053decc2
MD5 hash:
39274f692cae5cf33932f90258e4ad98
SHA1 hash:
054a3ecaf8abe838fe52a229bbba1a2755456653
Link:
https://www.unpac.me/results/1572b75c-f468-4bc8-8bdc-05d392eb2ee8/
SH256 hash:
b23b1cbc9307d22f064b6b82a258e316863b6a6793528705ba9e9789ca534e39
MD5 hash:
8277b03f43a2d15e5e1621556acdabcc
SHA1 hash:
73ea129498ee684797d56d727a714d4a6a9b31f2
Link:
https://www.unpac.me/results/1572b75c-f468-4bc8-8bdc-05d392eb2ee8/
SH256 hash:
68c536c55e3243fe51846d85c0ebba4d3c3635bc7779a74c9d98c6bdc1d865e7
MD5 hash:
35157f57f22d60714d2749f521d4ae43
SHA1 hash:
b0d632b8f6960e6f8c969b59e5e2085ea7834ced
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/1572b75c-f468-4bc8-8bdc-05d392eb2ee8/
SH256 hash:
1671fe7e30a5aff46c8dad711095359cac63188997f7910e15d9688d82b6bc57
MD5 hash:
a3d15403457ef1b154a2e0a50b2795dc
SHA1 hash:
ec08959f3e98a415903437ddd35818638c2adbf5
Link:
https://www.unpac.me/results/1572b75c-f468-4bc8-8bdc-05d392eb2ee8/
SH256 hash:
220508aa28bcd902b7513ee7187ffc10487ecae6e77d9446f17216473fc5fb61
MD5 hash:
503186f55d4cc1dd1e4e1c87106b7700
SHA1 hash:
42891547c002e9f4120f68057c4e0809b46cedad
Link:
https://www.unpac.me/results/1572b75c-f468-4bc8-8bdc-05d392eb2ee8/
Please note that we are no longer able to provide a coverage score for Virus Total.

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:NET
Create hunting rule
Author:malware-lu
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/43272/

Comments