MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c7a16881f8c69d16a9b0bdcbfdd5c4aada81eba19521d1c03ee7f6005f7d6629. 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: 14


Intelligence 14 IOCs YARA 19 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c7a16881f8c69d16a9b0bdcbfdd5c4aada81eba19521d1c03ee7f6005f7d6629
SHA3-384 hash: d7021ac6ca44efb19e1b54579b5fd765e236de9a9bd5cc1ab25050c8e9a47abc7be6dd0c0ac5411b3a67b0dab737f60b
SHA1 hash: a70e73bfd24e44f496da074b4d9a5b30af91292e
MD5 hash: 0cef447b5e4801587110015be62e85b3
humanhash: edward-cold-purple-fanta
File name:rx5aqVjdjJKDgYx.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:893'448 bytes
First seen:2024-03-24 00:52:56 UTC
Last seen:2024-03-24 02:31:10 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'452 x Formbook, 12'202 x SnakeKeylogger)
ssdeep 24576:YhUT/1LpCKoqQwZTv8RV2dZ2G10H96KIXryNyax8B5Y6srTCS:YhMyK1QwFxJ1s65yy+Y5xsl
Threatray 141 similar samples on MalwareBazaar
TLSH T1CE15ADEC321079EFC957CD76CA982C64AA20747B930BE243902705EDAA0DAD7DF145E7
TrID 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.7% (.EXE) Win64 Executable (generic) (10523/12/4)
6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.1% (.EXE) Win32 Executable (generic) (4504/4/1)
Reporter smica83
Tags:exe FormBook HUN

Intelligence

File Origin
# of uploads :
2
# of downloads :
373
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
c7a16881f8c69d16a9b0bdcbfdd5c4aada81eba19521d1c03ee7f6005f7d6629.exe
Verdict:
Suspicious activity
Analysis date:
2024-03-24 00:55:30 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/409783ae-3230-4d47-b3c6-3f44d5d3c02a

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
Сreating synchronization primitives
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Launching a process
Moving a file to the Program Files subdirectory
Replacing files
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
overlay packed
Link:
https://www.filescan.io/uploads/65ff79707e414bfaaebeed3a/reports/74812101-1313-42df-a4eb-3fb864c2a9bb/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/c7a16881f8c69d16a9b0bdcbfdd5c4aada81eba19521d1c03ee7f6005f7d6629
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:
MSIL Injector
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/bfa113ed-f261-49a8-8663-143b68ca846e
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1414596
Signature
.NET source code contains potential unpacker
Deletes itself after installation
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Found direct / indirect Syscall (likely to bypass EDR)
Injects a PE file into a foreign processes
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: 1414596 Sample: rx5aqVjdjJKDgYx.exe Startdate: 24/03/2024 Architecture: WINDOWS Score: 100 28 www.eh28mf3cdv.xyz 2->28 30 xiaoyue.zhuangkou.com 2->30 32 13 other IPs or domains 2->32 42 Snort IDS alert for network traffic 2->42 44 Malicious sample detected (through community Yara rule) 2->44 46 Multi AV Scanner detection for submitted file 2->46 50 4 other signatures 2->50 10 rx5aqVjdjJKDgYx.exe 3 2->10         started        signatures3 48 Performs DNS queries to domains with low reputation 28->48 process4 signatures5 62 Detected unpacking (changes PE section rights) 10->62 64 Detected unpacking (overwrites its own PE header) 10->64 66 Injects a PE file into a foreign processes 10->66 13 rx5aqVjdjJKDgYx.exe 10->13         started        process6 signatures7 68 Maps a DLL or memory area into another process 13->68 16 QYDmMVXUwICEybcb.exe 13->16 injected process8 signatures9 40 Found direct / indirect Syscall (likely to bypass EDR) 16->40 19 isoburn.exe 13 16->19         started        process10 signatures11 52 Tries to steal Mail credentials (via file / registry access) 19->52 54 Tries to harvest and steal browser information (history, passwords, etc) 19->54 56 Deletes itself after installation 19->56 58 3 other signatures 19->58 22 QYDmMVXUwICEybcb.exe 19->22 injected 26 firefox.exe 19->26         started        process12 dnsIp13 34 xiaoyue.zhuangkou.com 47.76.88.64, 49745, 80 VODAFONE-TRANSIT-ASVodafoneNZLtdNZ United States 22->34 36 elenagilherrero.com 84.32.84.32, 49750, 49751, 49752 NTT-LT-ASLT Lithuania 22->36 38 8 other IPs or domains 22->38 60 Found direct / indirect Syscall (likely to bypass EDR) 22->60 signatures14
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/c7a16881f8c69d16a9b0bdcbfdd5c4aada81eba19521d1c03ee7f6005f7d6629
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c7a16881f8c69d16a9b0bdcbfdd5c4aada81eba19521d1c03ee7f6005f7d6629/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2024-03-21 09:27:27 UTC
File Type:
PE (.Net Exe)
Extracted files:
13
AV detection:
19 of 23 (82.61%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=y6qwrapyy2ornknqxxf73voevlnid25bsuq5dqb6473aax35myuq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
25ddae2daf0f3117cfed10da3447d26c5291a324b44534ed692a873934bac628
Formbook
614ae605266b9829b5577ebd8562f5fadb2ef82337597d32e54c8ace9f1ea25c
Formbook
70f27cc87397701a73835625b0ee8caf3ef97b506554f2a7f65c2c08afd264f7
Formbook
99450e636243dad54861d58c1e62fae329b69b4c9af6ed1f53fba851d20b2fa7
Formbook
9f0139fadc3ae86c62acc7c217e8e3ddbd5965c0784d64737874566ccd28920a
Formbook
ad048fa92eef59c07432e25c1afa2af4853be0a301e3ea64910352373fdea51c
Formbook
d24bd0ebc242b94f043fe80e7f6a48d20566689f31c55aa1ec910a2877ae9e28
Formbook
dfa384f6136c43639f6c66766ca81c245e65a70fcf92015656b1cd7a579a3647
Formbook
+ 131 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://tria.ge/reports/240324-a8mm9shg6y/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Unpacked files
SH256 hash:
a59378ca16dc6ffbc07d8716889f4cb3a8d769068a9e58fd288f99afb9e66552
MD5 hash:
059c1b7332fc4ff2f21a2ef20fa093f1
SHA1 hash:
a41f80e695241d25971b7f26b7cd90e3f9d983ea
Link:
https://www.unpac.me/results/ed5aaac0-2df0-4f53-93d5-7cb5f27bf2e1/
SH256 hash:
1ae5ee514b7d71a3b8d5fe7182c901b0529acbc013fa4e25dcfccfeff75732f6
MD5 hash:
6c46476fb561195ddf67ae3c0861cb27
SHA1 hash:
280e9938a135fcb522e181ffb1211f73c28d871d
Link:
https://www.unpac.me/results/ed5aaac0-2df0-4f53-93d5-7cb5f27bf2e1/
SH256 hash:
975d5c095a6bd20d20d1553f0ad36795517087712bdc2a18fb8516665539242e
MD5 hash:
53106229a87e970b8befe76d9118f647
SHA1 hash:
f4965d92934d4acff7ad5f4f9521a1b8fb584798
Detections:
INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Link:
https://www.unpac.me/results/ed5aaac0-2df0-4f53-93d5-7cb5f27bf2e1/
Parent samples :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 hash:
7d9e55c2f4b7ce35d7879a84e9529d0479de4d8882de74a11c1923e9eb0914f0
MD5 hash:
d7e993618ef1c7f28cff6936ee5067f2
SHA1 hash:
d4c04d3134e427547158d23669f2db573341bce4
Link:
https://www.unpac.me/results/ed5aaac0-2df0-4f53-93d5-7cb5f27bf2e1/
SH256 hash:
bc39c3ba2ef220300f37e0ccffd84e387eaa28c831859c3588cdfdeec243b0c5
MD5 hash:
e4c53cafec45a303e00d4d7702b02822
SHA1 hash:
bf21964cd02330655a1eb04fb83ece35899977bf
Detections:
INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Link:
https://www.unpac.me/results/ed5aaac0-2df0-4f53-93d5-7cb5f27bf2e1/
Parent samples :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 hash:
c7a16881f8c69d16a9b0bdcbfdd5c4aada81eba19521d1c03ee7f6005f7d6629
MD5 hash:
0cef447b5e4801587110015be62e85b3
SHA1 hash:
a70e73bfd24e44f496da074b4d9a5b30af91292e
Detections:
INDICATOR_KB_CERT_7c1118cbbadc95da3752c46e47a27438
Create hunting rule
Link:
https://www.unpac.me/results/ed5aaac0-2df0-4f53-93d5-7cb5f27bf2e1/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c7a16881f8c6/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/c7a16881f8c69d16a9b0bdcbfdd5c4aada81eba19521d1c03ee7f6005f7d6629

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:DebuggerCheck__GlobalFlags
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Active
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Thread
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:INDICATOR_KB_CERT_7c1118cbbadc95da3752c46e47a27438
Create hunting rule
Author:ditekSHen
Description:Detects executables signed with stolen, revoked or invalid certificates
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:NET
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:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
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

File information

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

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