stealc | bdc7ffeef3b5a1883c2436061a2c1500bebe3351c53fdd08363b0a8a6688c875

Analysis

max time kernel
159s
max time network
138s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
13-03-2024 00:44

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General

Target

bdc7ffeef3b5a1883c2436061a2c1500bebe3351c53fdd08363b0a8a6688c875.exe
Size

2.0MB
MD5

349ba3d1c0e6137a949e7e987613f847
SHA1

bd497597228a48d1974a154ec9643d1e8bce02e2
SHA256

bdc7ffeef3b5a1883c2436061a2c1500bebe3351c53fdd08363b0a8a6688c875
SHA512

668a3333b3b7455c2eee799ae6b3b76c3dcd6887a5d6f33d6318b7c076e980dd4f0e2bad61467ebf29120c1284bd483b3a6772140cd4390016e6450793fa6417
SSDEEP

49152:LCfuk7QR6Bi93ljOw3ipad4NF27EVYsXpbsE2ywndWWc2j4tkjW33:GER6kPjOgipaU2QVhXpbLmzc2jXS

Score

10^/10

stealc discovery persistence spyware stealer upx

Malware Config

Extracted

Family

stealc

http://185.172.128.145

Attributes

url_path
/3cd2b41cbde8fc9c.php

Signatures

Stealc
Stealc is an infostealer written in C++.
stealer stealc
Downloads MZ/PE file

Executes dropped EXE 3 IoCs

pid	Process
2900	syncUpd.exe
2588	BroomSetup.exe
2148	DHCGIDHDAK.exe

Loads dropped DLL 8 IoCs

pid	Process
2532	bdc7ffeef3b5a1883c2436061a2c1500bebe3351c53fdd08363b0a8a6688c875.exe
2532	bdc7ffeef3b5a1883c2436061a2c1500bebe3351c53fdd08363b0a8a6688c875.exe
2532	bdc7ffeef3b5a1883c2436061a2c1500bebe3351c53fdd08363b0a8a6688c875.exe
2532	bdc7ffeef3b5a1883c2436061a2c1500bebe3351c53fdd08363b0a8a6688c875.exe
2532	bdc7ffeef3b5a1883c2436061a2c1500bebe3351c53fdd08363b0a8a6688c875.exe
2900	syncUpd.exe
2900	syncUpd.exe
2896	cmd.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

UPX packed file 7 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/files/0x000800000001446a-54.dat	upx
behavioral1/files/0x000800000001446a-60.dat	upx
behavioral1/memory/2532-63-0x0000000005010000-0x0000000005540000-memory.dmp	upx
behavioral1/memory/2588-67-0x0000000000400000-0x0000000000930000-memory.dmp	upx
behavioral1/memory/2588-87-0x0000000000400000-0x0000000000930000-memory.dmp	upx
behavioral1/memory/2588-108-0x0000000000400000-0x0000000000930000-memory.dmp	upx
behavioral1/memory/2588-167-0x0000000000400000-0x0000000000930000-memory.dmp	upx

Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000\Software\Microsoft\Windows\CurrentVersion\Run\Ledger-Live Updater = "C:\\Users\\Admin\\AppData\\Local\\Temp\\DHCGIDHDAK.exe"	DHCGIDHDAK.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	syncUpd.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	syncUpd.exe

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
1956	schtasks.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1072	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2900	syncUpd.exe
2900	syncUpd.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe
2148	DHCGIDHDAK.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2148	DHCGIDHDAK.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2588	BroomSetup.exe

Suspicious use of WriteProcessMemory 43 IoCs

description	pid	Process	procid_target
PID 2532 wrote to memory of 2900	2532	bdc7ffeef3b5a1883c2436061a2c1500bebe3351c53fdd08363b0a8a6688c875.exe	28
PID 2532 wrote to memory of 2900	2532	bdc7ffeef3b5a1883c2436061a2c1500bebe3351c53fdd08363b0a8a6688c875.exe	28
PID 2532 wrote to memory of 2900	2532	bdc7ffeef3b5a1883c2436061a2c1500bebe3351c53fdd08363b0a8a6688c875.exe	28
PID 2532 wrote to memory of 2900	2532	bdc7ffeef3b5a1883c2436061a2c1500bebe3351c53fdd08363b0a8a6688c875.exe	28
PID 2532 wrote to memory of 2588	2532	bdc7ffeef3b5a1883c2436061a2c1500bebe3351c53fdd08363b0a8a6688c875.exe	30
PID 2532 wrote to memory of 2588	2532	bdc7ffeef3b5a1883c2436061a2c1500bebe3351c53fdd08363b0a8a6688c875.exe	30
PID 2532 wrote to memory of 2588	2532	bdc7ffeef3b5a1883c2436061a2c1500bebe3351c53fdd08363b0a8a6688c875.exe	30
PID 2532 wrote to memory of 2588	2532	bdc7ffeef3b5a1883c2436061a2c1500bebe3351c53fdd08363b0a8a6688c875.exe	30
PID 2532 wrote to memory of 2588	2532	bdc7ffeef3b5a1883c2436061a2c1500bebe3351c53fdd08363b0a8a6688c875.exe	30
PID 2532 wrote to memory of 2588	2532	bdc7ffeef3b5a1883c2436061a2c1500bebe3351c53fdd08363b0a8a6688c875.exe	30
PID 2532 wrote to memory of 2588	2532	bdc7ffeef3b5a1883c2436061a2c1500bebe3351c53fdd08363b0a8a6688c875.exe	30
PID 2588 wrote to memory of 1940	2588	BroomSetup.exe	31
PID 2588 wrote to memory of 1940	2588	BroomSetup.exe	31
PID 2588 wrote to memory of 1940	2588	BroomSetup.exe	31
PID 2588 wrote to memory of 1940	2588	BroomSetup.exe	31
PID 1940 wrote to memory of 1928	1940	cmd.exe	33
PID 1940 wrote to memory of 1928	1940	cmd.exe	33
PID 1940 wrote to memory of 1928	1940	cmd.exe	33
PID 1940 wrote to memory of 1928	1940	cmd.exe	33
PID 1940 wrote to memory of 1956	1940	cmd.exe	34
PID 1940 wrote to memory of 1956	1940	cmd.exe	34
PID 1940 wrote to memory of 1956	1940	cmd.exe	34
PID 1940 wrote to memory of 1956	1940	cmd.exe	34
PID 2900 wrote to memory of 2896	2900	syncUpd.exe	37
PID 2900 wrote to memory of 2896	2900	syncUpd.exe	37
PID 2900 wrote to memory of 2896	2900	syncUpd.exe	37
PID 2900 wrote to memory of 2896	2900	syncUpd.exe	37
PID 2900 wrote to memory of 2988	2900	syncUpd.exe	39
PID 2900 wrote to memory of 2988	2900	syncUpd.exe	39
PID 2900 wrote to memory of 2988	2900	syncUpd.exe	39
PID 2900 wrote to memory of 2988	2900	syncUpd.exe	39
PID 2896 wrote to memory of 2148	2896	cmd.exe	41
PID 2896 wrote to memory of 2148	2896	cmd.exe	41
PID 2896 wrote to memory of 2148	2896	cmd.exe	41
PID 2896 wrote to memory of 2148	2896	cmd.exe	41
PID 2148 wrote to memory of 1276	2148	DHCGIDHDAK.exe	42
PID 2148 wrote to memory of 1276	2148	DHCGIDHDAK.exe	42
PID 2148 wrote to memory of 1276	2148	DHCGIDHDAK.exe	42
PID 2148 wrote to memory of 1276	2148	DHCGIDHDAK.exe	42
PID 1276 wrote to memory of 1072	1276	cmd.exe	44
PID 1276 wrote to memory of 1072	1276	cmd.exe	44
PID 1276 wrote to memory of 1072	1276	cmd.exe	44
PID 1276 wrote to memory of 1072	1276	cmd.exe	44

C:\Users\Admin\AppData\Local\Temp\bdc7ffeef3b5a1883c2436061a2c1500bebe3351c53fdd08363b0a8a6688c875.exe
"C:\Users\Admin\AppData\Local\Temp\bdc7ffeef3b5a1883c2436061a2c1500bebe3351c53fdd08363b0a8a6688c875.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2532
- C:\Users\Admin\AppData\Local\Temp\syncUpd.exe
  C:\Users\Admin\AppData\Local\Temp\syncUpd.exe
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2900
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\DHCGIDHDAK.exe"
    3⤵
    - Loads dropped DLL
    - Suspicious use of WriteProcessMemory
    PID:2896
  - - C:\Users\Admin\AppData\Local\Temp\DHCGIDHDAK.exe
      "C:\Users\Admin\AppData\Local\Temp\DHCGIDHDAK.exe"
      4⤵
      Executes dropped EXE
      Adds Run key to start application
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:2148
    - - C:\Windows\SysWOW64\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /C ping 2.2.2.2 -n 1 -w 3000 > Nul & Del C:\Users\Admin\AppData\Local\Temp\DHCGIDHDAK.exe
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:1276
      - C:\Windows\SysWOW64\PING.EXE
        
        ping 2.2.2.2 -n 1 -w 3000
        6⤵
        Runs ping.exe
        
        PID:1072
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\FCAKFCGCGI.exe"
    3⤵
    PID:2988
- C:\Users\Admin\AppData\Local\Temp\BroomSetup.exe
  C:\Users\Admin\AppData\Local\Temp\BroomSetup.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2588
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Roaming\Temp\Task.bat" "
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1940
  - - C:\Windows\SysWOW64\chcp.com
      chcp 1251
      4⤵
      PID:1928
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /tn "MalayamaraUpdate" /tr "'C:\Users\Admin\AppData\Local\Temp\Updater.exe'" /sc minute /mo 30 /F
      4⤵
      Creates scheduled task(s)
      PID:1956

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\BroomSetup.exe

Filesize
1.7MB

MD5
eee5ddcffbed16222cac0a1b4e2e466e

SHA1
28b40c88b8ea50b0782e2bcbb4cc0f411035f3d5

SHA256
2a40e5dccc7526c4982334941c90f95374460e2a816e84e724e98c4d52ae8c54

SHA512
8f88901f3ebd425818db09f268df19ccf8a755603f04e9481bcf02b112a84393f8a900ead77f8f971bfa33fd9fa5636b7494aaee864a0fb04e3273911a4216dc

Download Submit
C:\Users\Admin\AppData\Local\Temp\DHCGIDHDAK.exe

Filesize
101KB

MD5
42b838cf8bdf67400525e128d917f6e0

SHA1
a578f6faec738912dba8c41e7abe1502c46d0cae

SHA256
0e4ffba62ce9a464aa1b7ff9f1e55ace8f51ff1e15102d856f801a81f8b4607d

SHA512
f64b39d885375251ab7db72c57dc5b5095f0c6412169f1035d1f6a25b8415a2a01004d06bfa0267cf683ef7dea7a9f969ad43fde5a4376f1fcb65a57403433c0

Download Submit
C:\Users\Admin\AppData\Roaming\Temp\Task.bat

Filesize
128B

MD5
11bb3db51f701d4e42d3287f71a6a43e

SHA1
63a4ee82223be6a62d04bdfe40ef8ba91ae49a86

SHA256
6be22058abfb22b40a42fb003f86b89e204a83024c03eb82cd53e2a0a047c331

SHA512
907ad2c070cc1db89f43459a94d7f48985d939d749c9648b78572a266f0d3fde47813a129e9151dbf4a7d96d36f588172f57c88b8b947b56ed818d7d068abab2

Download Submit
\ProgramData\mozglue.dll

Filesize
593KB

MD5
c8fd9be83bc728cc04beffafc2907fe9

SHA1
95ab9f701e0024cedfbd312bcfe4e726744c4f2e

SHA256
ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

SHA512
fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

Download Submit
\ProgramData\nss3.dll

Filesize
1.1MB

MD5
8a78157e59dbe3153bc4a49b22c75013

SHA1
0ac3ea2a8001648f7e07bf499ae3e3885da6c0ae

SHA256
a8f68e83eece64f3f0bd55e6e2a967fca72e66648d2c6a59dbbb76ed08f7e7db

SHA512
a64ed84fd1430ca7b8639f2d83a8ce724ecbf3b047ba5d4562a8fa9e0be0756942882def4f4a4109c2a30c81f91c91511eb739361222a7257636169a635b616a

Download Submit
\Users\Admin\AppData\Local\Temp\BroomSetup.exe

Filesize
453KB

MD5
b0d3347cd300954b3a199bf50f1864c5

SHA1
faf18eaca622f43d199ab396fffa384936cce61a

SHA256
a713bc735036af8236fd2fed16f44eaa774f0b5714f94506387d05cd6a969f4f

SHA512
019e082652cb96d055251384fc2dce0bfd89712bcfa0029086e3be798c5d295c897b7730318f1ce099335a73b657c719084d9e355eee9f282dd3972e2307b734

Download Submit
\Users\Admin\AppData\Local\Temp\nst9945.tmp\INetC.dll

Filesize
21KB

MD5
2b342079303895c50af8040a91f30f71

SHA1
b11335e1cb8356d9c337cb89fe81d669a69de17e

SHA256
2d5d89025911e2e273f90f393624be4819641dbee1606de792362e442e54612f

SHA512
550452dadc86ecd205f40668894116790a456fe46e9985d68093d36cf32abf00edecb5c56ff0287464a0e819db7b3cc53926037a116de6c651332a7cc8035d47

Download Submit
\Users\Admin\AppData\Local\Temp\syncUpd.exe

Filesize
200KB

MD5
c722591f624fb69970f246b8c81d830f

SHA1
85516decea5d6987bebe39cbadf36053beaf4bb0

SHA256
13cd1152a19fdac6581cac2bd822f34bd3026ea1783ff231e299b6d28c046a6a

SHA512
822584c5c8a0813af4d845e80919776c71a43464ab719d1c303ebaae6a8ed47763183566bedc9be2e8c44de8ee6fd62d1e12be471e5d5c73ae4b1dcdaa34a908

Download Submit
memory/2148-134-0x0000000001360000-0x000000000137E000-memory.dmp

Filesize
120KB

Download
memory/2148-140-0x0000000071F50000-0x000000007263E000-memory.dmp

Filesize
6.9MB

Download
memory/2148-161-0x0000000004C90000-0x0000000004CD0000-memory.dmp

Filesize
256KB

Download
memory/2148-168-0x0000000071F50000-0x000000007263E000-memory.dmp

Filesize
6.9MB

Download
memory/2148-170-0x0000000004C90000-0x0000000004CD0000-memory.dmp

Filesize
256KB

Download
memory/2532-61-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/2532-63-0x0000000005010000-0x0000000005540000-memory.dmp

Filesize
5.2MB

Download
memory/2588-67-0x0000000000400000-0x0000000000930000-memory.dmp

Filesize
5.2MB

Download
memory/2588-69-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/2588-87-0x0000000000400000-0x0000000000930000-memory.dmp

Filesize
5.2MB

Download
memory/2588-117-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/2588-167-0x0000000000400000-0x0000000000930000-memory.dmp

Filesize
5.2MB

Download
memory/2588-108-0x0000000000400000-0x0000000000930000-memory.dmp

Filesize
5.2MB

Download
memory/2900-92-0x0000000000770000-0x0000000000870000-memory.dmp

Filesize
1024KB

Download
memory/2900-122-0x0000000000770000-0x0000000000870000-memory.dmp

Filesize
1024KB

Download
memory/2900-114-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/2900-118-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/2900-88-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/2900-68-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/2900-19-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/2900-18-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/2900-17-0x0000000000220000-0x0000000000247000-memory.dmp

Filesize
156KB

Download
memory/2900-16-0x0000000000770000-0x0000000000870000-memory.dmp

Filesize
1024KB

Download
memory/2988-156-0x0000000002240000-0x0000000002241000-memory.dmp

Filesize
4KB

Download