stealc | a843c6a9eea6f76812328c7e417cc8469d0ee198f85c4ab762c1b3babe668a83

Analysis

max time kernel
300s
max time network
122s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
15/03/2024, 01:12

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General

Target

a843c6a9eea6f76812328c7e417cc8469d0ee198f85c4ab762c1b3babe668a83.exe
Size

2.1MB
MD5

47d83524efaab86eb37d01d74e1477f2
SHA1

9e3d7096a36b3e5d9b32dd8cafe8666870b756e8
SHA256

a843c6a9eea6f76812328c7e417cc8469d0ee198f85c4ab762c1b3babe668a83
SHA512

1e75bf2ead51175443e90bbbf9492e73e00bb6bd1b68514bbb5c248a93965fbf691071216de6a706920f4239be65196cb2e067dec33f8f33e1ddc3ce088df1d8
SSDEEP

49152:LZBHlhGVI//y3uBIWXPQUc/suMUq5U47O6mO/p2kN/h4n:dFlI0/yoIWXOsuMUq5UOeONv4n

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
2984	syncUpd.exe
2996	BroomSetup.exe
2816	JJJKEHCAKF.exe

Loads dropped DLL 9 IoCs

pid	Process
2612	a843c6a9eea6f76812328c7e417cc8469d0ee198f85c4ab762c1b3babe668a83.exe
2612	a843c6a9eea6f76812328c7e417cc8469d0ee198f85c4ab762c1b3babe668a83.exe
2612	a843c6a9eea6f76812328c7e417cc8469d0ee198f85c4ab762c1b3babe668a83.exe
2612	a843c6a9eea6f76812328c7e417cc8469d0ee198f85c4ab762c1b3babe668a83.exe
2612	a843c6a9eea6f76812328c7e417cc8469d0ee198f85c4ab762c1b3babe668a83.exe
2612	a843c6a9eea6f76812328c7e417cc8469d0ee198f85c4ab762c1b3babe668a83.exe
2984	syncUpd.exe
2984	syncUpd.exe
2232	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 5 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x0008000000015cff-36.dat	upx
behavioral1/files/0x0008000000015cff-29.dat	upx
behavioral1/memory/2996-38-0x0000000000400000-0x0000000000930000-memory.dmp	upx
behavioral1/memory/2996-112-0x0000000000400000-0x0000000000930000-memory.dmp	upx
behavioral1/memory/2996-180-0x0000000000400000-0x0000000000930000-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-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\Ledger-Live Updater = "C:\\Users\\Admin\\AppData\\Local\\Temp\\JJJKEHCAKF.exe"	JJJKEHCAKF.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

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
3	api.ipify.org

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 opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	syncUpd.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	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
2896	schtasks.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3020	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2984	syncUpd.exe
2984	syncUpd.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe
2816	JJJKEHCAKF.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2816	JJJKEHCAKF.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2996	BroomSetup.exe

Suspicious use of WriteProcessMemory 43 IoCs

description	pid	Process	procid_target
PID 2612 wrote to memory of 2984	2612	a843c6a9eea6f76812328c7e417cc8469d0ee198f85c4ab762c1b3babe668a83.exe	28
PID 2612 wrote to memory of 2984	2612	a843c6a9eea6f76812328c7e417cc8469d0ee198f85c4ab762c1b3babe668a83.exe	28
PID 2612 wrote to memory of 2984	2612	a843c6a9eea6f76812328c7e417cc8469d0ee198f85c4ab762c1b3babe668a83.exe	28
PID 2612 wrote to memory of 2984	2612	a843c6a9eea6f76812328c7e417cc8469d0ee198f85c4ab762c1b3babe668a83.exe	28
PID 2612 wrote to memory of 2996	2612	a843c6a9eea6f76812328c7e417cc8469d0ee198f85c4ab762c1b3babe668a83.exe	29
PID 2612 wrote to memory of 2996	2612	a843c6a9eea6f76812328c7e417cc8469d0ee198f85c4ab762c1b3babe668a83.exe	29
PID 2612 wrote to memory of 2996	2612	a843c6a9eea6f76812328c7e417cc8469d0ee198f85c4ab762c1b3babe668a83.exe	29
PID 2612 wrote to memory of 2996	2612	a843c6a9eea6f76812328c7e417cc8469d0ee198f85c4ab762c1b3babe668a83.exe	29
PID 2612 wrote to memory of 2996	2612	a843c6a9eea6f76812328c7e417cc8469d0ee198f85c4ab762c1b3babe668a83.exe	29
PID 2612 wrote to memory of 2996	2612	a843c6a9eea6f76812328c7e417cc8469d0ee198f85c4ab762c1b3babe668a83.exe	29
PID 2612 wrote to memory of 2996	2612	a843c6a9eea6f76812328c7e417cc8469d0ee198f85c4ab762c1b3babe668a83.exe	29
PID 2996 wrote to memory of 2756	2996	BroomSetup.exe	30
PID 2996 wrote to memory of 2756	2996	BroomSetup.exe	30
PID 2996 wrote to memory of 2756	2996	BroomSetup.exe	30
PID 2996 wrote to memory of 2756	2996	BroomSetup.exe	30
PID 2756 wrote to memory of 2856	2756	cmd.exe	32
PID 2756 wrote to memory of 2856	2756	cmd.exe	32
PID 2756 wrote to memory of 2856	2756	cmd.exe	32
PID 2756 wrote to memory of 2856	2756	cmd.exe	32
PID 2756 wrote to memory of 2896	2756	cmd.exe	33
PID 2756 wrote to memory of 2896	2756	cmd.exe	33
PID 2756 wrote to memory of 2896	2756	cmd.exe	33
PID 2756 wrote to memory of 2896	2756	cmd.exe	33
PID 2984 wrote to memory of 2232	2984	syncUpd.exe	35
PID 2984 wrote to memory of 2232	2984	syncUpd.exe	35
PID 2984 wrote to memory of 2232	2984	syncUpd.exe	35
PID 2984 wrote to memory of 2232	2984	syncUpd.exe	35
PID 2984 wrote to memory of 2404	2984	syncUpd.exe	37
PID 2984 wrote to memory of 2404	2984	syncUpd.exe	37
PID 2984 wrote to memory of 2404	2984	syncUpd.exe	37
PID 2984 wrote to memory of 2404	2984	syncUpd.exe	37
PID 2232 wrote to memory of 2816	2232	cmd.exe	39
PID 2232 wrote to memory of 2816	2232	cmd.exe	39
PID 2232 wrote to memory of 2816	2232	cmd.exe	39
PID 2232 wrote to memory of 2816	2232	cmd.exe	39
PID 2816 wrote to memory of 1472	2816	JJJKEHCAKF.exe	40
PID 2816 wrote to memory of 1472	2816	JJJKEHCAKF.exe	40
PID 2816 wrote to memory of 1472	2816	JJJKEHCAKF.exe	40
PID 2816 wrote to memory of 1472	2816	JJJKEHCAKF.exe	40
PID 1472 wrote to memory of 3020	1472	cmd.exe	42
PID 1472 wrote to memory of 3020	1472	cmd.exe	42
PID 1472 wrote to memory of 3020	1472	cmd.exe	42
PID 1472 wrote to memory of 3020	1472	cmd.exe	42

C:\Users\Admin\AppData\Local\Temp\a843c6a9eea6f76812328c7e417cc8469d0ee198f85c4ab762c1b3babe668a83.exe
"C:\Users\Admin\AppData\Local\Temp\a843c6a9eea6f76812328c7e417cc8469d0ee198f85c4ab762c1b3babe668a83.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2612
- 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:2984
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\JJJKEHCAKF.exe"
    3⤵
    - Loads dropped DLL
    - Suspicious use of WriteProcessMemory
    PID:2232
  - - C:\Users\Admin\AppData\Local\Temp\JJJKEHCAKF.exe
      "C:\Users\Admin\AppData\Local\Temp\JJJKEHCAKF.exe"
      4⤵
      Executes dropped EXE
      Adds Run key to start application
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:2816
    - - 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\JJJKEHCAKF.exe
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:1472
      - C:\Windows\SysWOW64\PING.EXE
        
        ping 2.2.2.2 -n 1 -w 3000
        6⤵
        Runs ping.exe
        
        PID:3020
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\HDGHJEBFBF.exe"
    3⤵
    PID:2404
- 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:2996
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Roaming\Temp\Task.bat" "
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2756
  - - C:\Windows\SysWOW64\chcp.com
      chcp 1251
      4⤵
      PID:2856
  - - 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:2896

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

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Downloads

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

Filesize
610KB

MD5
d424fb0ae2818d57c74eb28327a482c3

SHA1
f1fa700923f32d64290ca1f1fb9081785ecce13a

SHA256
7e786183a05a48d184032369fd15671e33614ebf0dfd3883dbf7a1856b2a53d0

SHA512
ee264b6f5fc3015513dae5f5fe366026dc8cc873fd7d972369bb8061fd1c3e32df3ba9a677ea8ea17022bc9c6de7353dce680239ae77713973ffcb8ffbfe8d4e

Download Submit
C:\Users\Admin\AppData\Local\Temp\JJJKEHCAKF.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
2.0MB

MD5
1cc453cdf74f31e4d913ff9c10acdde2

SHA1
6e85eae544d6e965f15fa5c39700fa7202f3aafe

SHA256
ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

SHA512
dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

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

Filesize
1.4MB

MD5
83136f38c4a7f35670b7c621ddb3758b

SHA1
775896a3b1508a92c700c7ecf0618623eac9a8fe

SHA256
9e7a82abd386798c82788cbd73d4b8f0c20a8a489f1092254d796312c30d9fe3

SHA512
551ea18d199376198e42c9c6cec25bc7e9a97c9fa5b699b48ba1fd4e62658b82e3898ab9e4dc56cc81db7676e2dfb1075e4533724f0734973db0f856c2a55f15

Download Submit
\Users\Admin\AppData\Local\Temp\nsd1104.tmp\INetC.dll

Filesize
21KB

MD5
2b342079303895c50af8040a91f30f71

SHA1
b11335e1cb8356d9c337cb89fe81d669a69de17e

SHA256
2d5d89025911e2e273f90f393624be4819641dbee1606de792362e442e54612f

SHA512
550452dadc86ecd205f40668894116790a456fe46e9985d68093d36cf32abf00edecb5c56ff0287464a0e819db7b3cc53926037a116de6c651332a7cc8035d47

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

Filesize
253KB

MD5
5033fc63b03bed10b7d5a9dca0592e93

SHA1
4b5be6516e45d75d4662332134e72320d1bb962e

SHA256
4411c6a053b00fbcf08b03a67added99061b7d7ba0070b6e5e1d24586d856c5c

SHA512
be0f1805855a42bc37d79d30ebc40cf1ef73dd5233a06fb3c6f74ae5ce52c75ec499a32b4d6ff82524d99f9bc9ef7a96bec43cbe1499427d3002ada58bbaf5cd

Download Submit
memory/2404-170-0x00000000024A0000-0x00000000024A1000-memory.dmp

Filesize
4KB

Download
memory/2612-37-0x00000000055A0000-0x0000000005AD0000-memory.dmp

Filesize
5.2MB

Download
memory/2612-113-0x00000000055A0000-0x0000000005AD0000-memory.dmp

Filesize
5.2MB

Download
memory/2612-35-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/2816-182-0x00000000725F0000-0x0000000072CDE000-memory.dmp

Filesize
6.9MB

Download
memory/2816-175-0x0000000004C50000-0x0000000004C90000-memory.dmp

Filesize
256KB

Download
memory/2816-158-0x00000000725F0000-0x0000000072CDE000-memory.dmp

Filesize
6.9MB

Download
memory/2816-156-0x0000000000200000-0x000000000021E000-memory.dmp

Filesize
120KB

Download
memory/2816-183-0x0000000004C50000-0x0000000004C90000-memory.dmp

Filesize
256KB

Download
memory/2984-131-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/2984-43-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/2984-41-0x0000000000760000-0x0000000000860000-memory.dmp

Filesize
1024KB

Download
memory/2984-125-0x0000000000760000-0x0000000000860000-memory.dmp

Filesize
1024KB

Download
memory/2984-126-0x0000000000220000-0x0000000000247000-memory.dmp

Filesize
156KB

Download
memory/2984-128-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/2984-132-0x0000000000760000-0x0000000000860000-memory.dmp

Filesize
1024KB

Download
memory/2984-42-0x0000000000220000-0x0000000000247000-memory.dmp

Filesize
156KB

Download
memory/2984-111-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/2984-44-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/2984-122-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/2996-112-0x0000000000400000-0x0000000000930000-memory.dmp

Filesize
5.2MB

Download
memory/2996-123-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/2996-180-0x0000000000400000-0x0000000000930000-memory.dmp

Filesize
5.2MB

Download
memory/2996-39-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/2996-38-0x0000000000400000-0x0000000000930000-memory.dmp

Filesize
5.2MB

Download