MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c2b233d4397811d23bc48357374d11934203d06d3b5be79b3081207037f4d115. 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


DarkCloud


Vendor detections: 14


Intelligence 14 IOCs YARA 18 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c2b233d4397811d23bc48357374d11934203d06d3b5be79b3081207037f4d115
SHA3-384 hash: 32a0648b69c3f30efbb5266661559e07651a2d9af4ea82e7dd290b7861eebba7582ecdb3ad158bc61c171b382ad68162
SHA1 hash: b8a85d1c864c0c3ddd7ccc3fc22625ff7fab8a7e
MD5 hash: 155b228d8885cd64ada5d105551bc5ae
humanhash: beryllium-stairway-timing-undress
File name:f28IB2Erinqonrf.exe
Download: download sample
Signature DarkCloud
Create hunting rule
File size:1'175'040 bytes
First seen:2025-02-05 13:58:37 UTC
Last seen:2025-02-05 14:30:32 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'608 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:CKUMXe5y/t1u6m3YVcRhB/fcwuj4oskTIGaRnNSixKhzcVSEFWKkczh7i59fVV:ZIYE7cwa4oTs7nN/wzcNWKR9y9N
TLSH T10245A03D18F9212792A1C6A1CFE4CA23F040A8EA31936D25D9D24355071FA5BBDD3E7E
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 threatcat_ch
Tags:DarkCloud exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
523
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
f28IB2Erinqonrf.exe
Verdict:
Malicious activity
Analysis date:
2025-02-05 13:59:32 UTC
Tags:
stealer darkcloud upx
Link:
https://app.any.run/tasks/0670e58e-eeeb-4828-abfe-2ad829eb1563

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.MalwareX-gen.20623.23846.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67a3703a51193558eb197b0b
Tags:
shell virus msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a file in the %temp% directory
Launching a process
Creating a file
Creating a file in the %AppData% subdirectories
Reading critical registry keys
Using the Windows Management Instrumentation requests
Forced shutdown of a system process
Stealing user critical data
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
obfuscated obfuscated obfuscated packed vbnet
Link:
https://www.filescan.io/uploads/67a36eb585a4a79c5db8afd7/reports/58609dfe-f7c7-4d53-a815-8122b3d98f82/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/c2b233d4397811d23bc48357374d11934203d06d3b5be79b3081207037f4d115
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/3a14bc33-6198-4d13-bd45-9d1804b01186
Result
Threat name:
DarkCloud
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1607415
Signature
.NET source code contains potential unpacker
.NET source code contains very large strings
Adds a directory exclusion to Windows Defender
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Scheduled temp file as task from temp location
Tries to harvest and steal browser information (history, passwords, etc)
Uses schtasks.exe or at.exe to add and modify task schedules
Writes or reads registry keys via WMI
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected DarkCloud
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1607415 Sample: f28IB2Erinqonrf.exe Startdate: 05/02/2025 Architecture: WINDOWS Score: 100 42 Malicious sample detected (through community Yara rule) 2->42 44 Antivirus / Scanner detection for submitted sample 2->44 46 Sigma detected: Scheduled temp file as task from temp location 2->46 48 8 other signatures 2->48 7 f28IB2Erinqonrf.exe 7 2->7         started        11 zyldtjpH.exe 5 2->11         started        process3 file4 34 C:\Users\user\AppData\Roaming\zyldtjpH.exe, PE32 7->34 dropped 36 C:\Users\...\zyldtjpH.exe:Zone.Identifier, ASCII 7->36 dropped 38 C:\Users\user\AppData\Local\Temp\tmp7F1.tmp, XML 7->38 dropped 40 C:\Users\user\...\f28IB2Erinqonrf.exe.log, ASCII 7->40 dropped 50 Uses schtasks.exe or at.exe to add and modify task schedules 7->50 52 Writes to foreign memory regions 7->52 54 Allocates memory in foreign processes 7->54 62 2 other signatures 7->62 13 powershell.exe 23 7->13         started        16 powershell.exe 23 7->16         started        18 vbc.exe 7->18         started        24 3 other processes 7->24 56 Antivirus detection for dropped file 11->56 58 Multi AV Scanner detection for dropped file 11->58 60 Machine Learning detection for dropped file 11->60 20 vbc.exe 11->20         started        22 schtasks.exe 11->22         started        signatures5 process6 signatures7 64 Loading BitLocker PowerShell Module 13->64 26 conhost.exe 13->26         started        28 conhost.exe 16->28         started        66 Writes or reads registry keys via WMI 18->66 68 Tries to harvest and steal browser information (history, passwords, etc) 20->68 30 conhost.exe 22->30         started        32 conhost.exe 24->32         started        process8
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/c2b233d4397811d23bc48357374d11934203d06d3b5be79b3081207037f4d115
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c2b233d4397811d23bc48357374d11934203d06d3b5be79b3081207037f4d115/
Threat name:
ByteCode-MSIL.Trojan.Taskun
Create hunting rule
Status:
Malicious
First seen:
2025-02-05 11:27:29 UTC
File Type:
PE (.Net Exe)
Extracted files:
7
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ykzdhvbzpai5eo6eqnltotirsnbahudnhnn6pgzqqeqhan7u2ekq._file
Verdict:
malicious
Label(s):
unknown_loader_037
Create hunting rule
Similar samples:
error
DarkCloud
Result
Malware family:
n/a
Score:
  8/10
Tags:
discovery execution upx
Link:
https://tria.ge/reports/250205-rafwhayqbz/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
UPX packed file
ACProtect 1.3x - 1.4x DLL software
Checks computer location settings
Loads dropped DLL
Uses the VBS compiler for execution
Command and Scripting Interpreter: PowerShell
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/e97b6660-bfa0-4558-bc24-d4cf88206e56
Unpacked files
SH256 hash:
c2b233d4397811d23bc48357374d11934203d06d3b5be79b3081207037f4d115
MD5 hash:
155b228d8885cd64ada5d105551bc5ae
SHA1 hash:
b8a85d1c864c0c3ddd7ccc3fc22625ff7fab8a7e
Link:
https://www.unpac.me/results/b43d8f26-9586-4fce-a20b-f19a0736bdb6/
SH256 hash:
eb76abaf7b25ee4ceefdacf263d9c77e959dc417281875f8a884a24e46c10c72
MD5 hash:
d00c3b0e045187ea671d09ff0a6a3348
SHA1 hash:
11b1049f7f956167c194fc49f02061687f2539e6
Detections:
darkcloudstealer
Create hunting rule
INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_SQLQuery_ConfidentialDataStore
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_CC_Regex
Create hunting rule
MALWARE_Win_DarkCloud
Create hunting rule
Link:
https://www.unpac.me/results/b43d8f26-9586-4fce-a20b-f19a0736bdb6/
Parent samples :
91ce11dba631a9613d7c96409db89bf0cc358eff124632ad56f25fd6b372b070
c2b233d4397811d23bc48357374d11934203d06d3b5be79b3081207037f4d115
SH256 hash:
5f6b4adfd3f64f891a039a787ad12a860086e8ee60f81f707f20aa17946cc849
MD5 hash:
bfcb87dae32b4dc5ba0c45e0923b0031
SHA1 hash:
d14dffaa63f129e6cb735b0bc6a365fce8864909
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/b43d8f26-9586-4fce-a20b-f19a0736bdb6/
SH256 hash:
e712bcd56fe64742c0f674f3acff83490f8103c260ea3389f56151b5066b7cd3
MD5 hash:
7bad4197d1ae020c9049a782eb9a71d2
SHA1 hash:
e1253047ea92beb7d161b106765ad8b03bc86b1e
Link:
https://www.unpac.me/results/b43d8f26-9586-4fce-a20b-f19a0736bdb6/
SH256 hash:
3b75425895af4ae3186b36277553641e37ca1d620ae18d68e40d13351b54de6a
MD5 hash:
94d1531b52774dce52a89e33646d5b1d
SHA1 hash:
29bf887b025b97bd7a9e1e261852ba824234a625
Link:
https://www.unpac.me/results/b43d8f26-9586-4fce-a20b-f19a0736bdb6/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c2b233d43978/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/c2b233d4397811d23bc48357374d11934203d06d3b5be79b3081207037f4d115

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:AgentTesla_DIFF_Common_Strings_01
Create hunting rule
Author:schmidtsz
Description:Identify partial Agent Tesla strings
Rule name:BLOWFISH_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for Blowfish constants
Rule name:INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
Author:ditekSHen
Description:Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.
Rule name:INDICATOR_SUSPICIOUS_EXE_CC_Regex
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing credit card regular expressions
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_SQLQuery_ConfidentialDataStore
Create hunting rule
Author:ditekSHen
Description:Detects executables containing SQL queries to confidential data stores. Observed in infostealers
Rule name:MALWARE_Win_DarkCloud
Create hunting rule
Author:ditekSHen
Description:Detects DarkCloud infostealer
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:ProtectSharewareV11eCompservCMS
Create hunting rule
Author:malware-lu
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vba
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:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)
Rule name:UPXV200V290MarkusOberhumerLaszloMolnarJohnReiser
Create hunting rule
Author:malware-lu
Rule name:Windows_Trojan_DarkCloud_9905abce
Create hunting rule
Author:Elastic Security

File information

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

Malspam

DarkCloud

Executable exe c2b233d4397811d23bc48357374d11934203d06d3b5be79b3081207037f4d115

(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

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