MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 57b81292b61a36171a2ad822d255aae878a8f9ca187efb43da94c7865c8388c4. 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 18 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 57b81292b61a36171a2ad822d255aae878a8f9ca187efb43da94c7865c8388c4
SHA3-384 hash: f8432d0ed3459d3f581b2e12c5f8af0b6a5840dfe347bc7f7a7a9114dbf214bad061f11918176006cf19711ceaf3534e
SHA1 hash: 757169009af1210acab01e9a2385e5cca4b94f20
MD5 hash: 96fe3d00e8b2ba36dfb240a004ab28e1
humanhash: twelve-avocado-eleven-nineteen
File name:HYCO_Invoices MS2 & MS3.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:734'216 bytes
First seen:2024-04-17 06:34:09 UTC
Last seen:2024-04-17 07:34:02 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'597 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:j+NKG40wYjR2HI7OZGiOp+epbysKCRePsDl2h4TJEAvmxUP5kR:j+LXMH4OZGiiV9RWsJ2h4TOfxqk
TLSH T149F4124877FC5AA0D8EA0F3650B4AA11873DBC126C13FB6D6CD060AF5DB2BD64B405A7
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
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)
File icon (PE):PE icon
dhash icon 70e8d4d6d6d4d4d4 (10 x Formbook)
Reporter lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
321
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
57b81292b61a36171a2ad822d255aae878a8f9ca187efb43da94c7865c8388c4.exe
Verdict:
Suspicious activity
Analysis date:
2024-04-17 06:39:51 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/382645b5-c157-4a2c-b992-b363adbfac42

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

Behaviour
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Сreating synchronization primitives
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
masquerade overlay packed
Link:
https://www.filescan.io/uploads/661f6d96b575a100a23053e3/reports/0aaf6162-b93a-4793-ac90-3015e287f215/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/57b81292b61a36171a2ad822d255aae878a8f9ca187efb43da94c7865c8388c4
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:
Agent Tesla
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/25d3f24d-3f14-4b31-91b8-64be267b1171
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1427199
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Found direct / indirect Syscall (likely to bypass EDR)
Initial sample is a PE file and has a suspicious name
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)
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Snort IDS alert for network traffic
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1427199 Sample: HYCO_Invoices MS2 & MS3.exe Startdate: 17/04/2024 Architecture: WINDOWS Score: 100 29 www.www60270.xyz 2->29 31 www.skibinscy-finanse.pl 2->31 33 6 other IPs or domains 2->33 43 Snort IDS alert for network traffic 2->43 45 Malicious sample detected (through community Yara rule) 2->45 47 Multi AV Scanner detection for submitted file 2->47 51 6 other signatures 2->51 10 HYCO_Invoices MS2 & MS3.exe 3 2->10         started        signatures3 49 Performs DNS queries to domains with low reputation 29->49 process4 process5 12 HYCO_Invoices MS2 & MS3.exe 10->12         started        15 HYCO_Invoices MS2 & MS3.exe 10->15         started        signatures6 63 Maps a DLL or memory area into another process 12->63 17 JlRhrxMCYjuGzWWvXkXNzhLX.exe 12->17 injected process7 signatures8 41 Found direct / indirect Syscall (likely to bypass EDR) 17->41 20 replace.exe 13 17->20         started        process9 signatures10 53 Tries to steal Mail credentials (via file / registry access) 20->53 55 Tries to harvest and steal browser information (history, passwords, etc) 20->55 57 Modifies the context of a thread in another process (thread injection) 20->57 59 2 other signatures 20->59 23 JlRhrxMCYjuGzWWvXkXNzhLX.exe 20->23 injected 27 firefox.exe 20->27         started        process11 dnsIp12 35 www.skibinscy-finanse.pl 178.211.137.59, 49756, 49757, 49758 TIS-DIALOG-ASRU Ukraine 23->35 37 www.choosejungmann.com 91.195.240.117, 49740, 49741, 49742 SEDO-ASDE Germany 23->37 39 4 other IPs or domains 23->39 61 Found direct / indirect Syscall (likely to bypass EDR) 23->61 signatures13
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/57b81292b61a36171a2ad822d255aae878a8f9ca187efb43da94c7865c8388c4
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/57b81292b61a36171a2ad822d255aae878a8f9ca187efb43da94c7865c8388c4/
Threat name:
ByteCode-MSIL.Trojan.LokiBot
Create hunting rule
Status:
Malicious
First seen:
2024-04-16 20:24:37 UTC
File Type:
PE (.Net Exe)
Extracted files:
31
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=k64bfevwdi3bogrk3arnevnk5b4kr6okdb7pwq62stdymxedrdca._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://tria.ge/reports/240417-hccr7ahf2y/
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Unpacked files
SH256 hash:
5a2e2086d5d8e5cdff76eee77768850a4c5d61de4ba421ddb0de99aa519b0ee1
MD5 hash:
ca0a9b4e0d418b2f684462250dc5072d
SHA1 hash:
e8c5ffbae73d7d07953184a3bfe7889269da99af
Link:
https://www.unpac.me/results/d443bc83-51d1-48ac-bbce-b64dc0181ee6/
SH256 hash:
f0e65bf293dcce196162c676486073a745f072db86e553e73c2e73404dacd1c0
MD5 hash:
15abc10dff1a7ab6eddea2d73f4ac80c
SHA1 hash:
c1d1bdee4577a5d95d4c4524ae922a6ba756f846
Link:
https://www.unpac.me/results/d443bc83-51d1-48ac-bbce-b64dc0181ee6/
SH256 hash:
d8e8109b1e444070e76fa2b4562abda4ab2507ea4f6403e0456ea8824efd23da
MD5 hash:
5c41f212d7f0699abe4a65ecedfc333f
SHA1 hash:
7276675a8b65bf6312c86c971001321f9828cbba
Link:
https://www.unpac.me/results/d443bc83-51d1-48ac-bbce-b64dc0181ee6/
SH256 hash:
353d8c5d8984b5da7181080a108205a4bbcef4ed9e1da4bb9fd85ee90a9273bb
MD5 hash:
e12120d5933a67b8fec137de76d7323a
SHA1 hash:
5cc2863251dfe621969ae6799331dcde3edce64c
Link:
https://www.unpac.me/results/d443bc83-51d1-48ac-bbce-b64dc0181ee6/
SH256 hash:
5d3b862b27a5560f64437cb6536329849a21cdf636a5a60903f09e5a26d6e6ae
MD5 hash:
a3e7359f4b2bba12f1351f95d29edaf0
SHA1 hash:
3bde250aa41f4c8bb377611a8da6158265c7d2c5
Link:
https://www.unpac.me/results/d443bc83-51d1-48ac-bbce-b64dc0181ee6/
SH256 hash:
57b81292b61a36171a2ad822d255aae878a8f9ca187efb43da94c7865c8388c4
MD5 hash:
96fe3d00e8b2ba36dfb240a004ab28e1
SHA1 hash:
757169009af1210acab01e9a2385e5cca4b94f20
Detections:
INDICATOR_KB_CERT_7c1118cbbadc95da3752c46e47a27438
Create hunting rule
Link:
https://www.unpac.me/results/d443bc83-51d1-48ac-bbce-b64dc0181ee6/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/57b81292b61a/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.10
Link:
https://yomi.yoroi.company/submissions/57b81292b61a36171a2ad822d255aae878a8f9ca187efb43da94c7865c8388c4

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:Formbook
Create hunting rule
Author:kevoreilly
Description:Formbook Payload
Rule name:INDICATOR_KB_CERT_7c1118cbbadc95da3752c46e47a27438
Create hunting rule
Author:ditekSHen
Description:Detects executables signed with stolen, revoked or invalid certificates
Rule name:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:pe_imphash
Create hunting rule
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:PE_Potentially_Signed_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Windows_Trojan_Formbook
Create hunting rule
Author:@malgamy12
Rule name:Windows_Trojan_Formbook_1112e116
Create hunting rule
Author:Elastic Security
Reference:https://www.elastic.co/security-labs/formbook-adopts-cab-less-approach
Rule name:win_formbook_w0
Create hunting rule
Author:@malgamy12

File information

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

Malspam

Formbook

Executable exe 57b81292b61a36171a2ad822d255aae878a8f9ca187efb43da94c7865c8388c4

(this sample)

  
Delivery method
Distributed via e-mail attachment

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

Comments