stealc | 4cff8ece3cb165d73a543ac1c31f29727efdc710df45889a4af0613d125b82ec

Analysis

max time kernel
150s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
12/03/2024, 13:51

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General

Target

$TEMP/syncUpd.exe
Size

199KB
MD5

04cdeae76554c91315c3524135267d7c
SHA1

4e4bc1eb29a0d745b65c87d64bf80e5a8461b7f8
SHA256

62a4dd1892de69284a7ae05b81b79da497e3840ceb4e8f4f0fd8fc83d4d643b6
SHA512

6d645cdc6335a1df3863ec99f10beb977a8cc177316d26eddce34936ea1428f3b7d82ea2d44d0c36923538b32ce3444220b0b0088383dec279a9c91fbd34376a
SSDEEP

3072:cqDOqHgFCDiiYFGF4yEGKjDkT3uDj+4AjaSfkquqltJrUm+C:RfgaeKPp3GjI7/oU

Score

10^/10

stealc discovery persistence spyware stealer

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

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-557049126-2506969350-2798870634-1000\Control Panel\International\Geo\Nation	syncUpd.exe
Key value queried	\REGISTRY\USER\S-1-5-21-557049126-2506969350-2798870634-1000\Control Panel\International\Geo\Nation	JJECGCBGDB.exe

Executes dropped EXE 1 IoCs

pid	Process
3056	JJECGCBGDB.exe

Loads dropped DLL 2 IoCs

pid	Process
4860	syncUpd.exe
4860	syncUpd.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
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-1-5-21-557049126-2506969350-2798870634-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Ledger-Live Updater = "C:\\Users\\Admin\\AppData\\Local\\Temp\\JJECGCBGDB.exe"	JJECGCBGDB.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 opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	syncUpd.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	syncUpd.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4484	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4860	syncUpd.exe
4860	syncUpd.exe
4860	syncUpd.exe
4860	syncUpd.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe
3056	JJECGCBGDB.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3056	JJECGCBGDB.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4860 wrote to memory of 1404	4860	syncUpd.exe	103
PID 4860 wrote to memory of 1404	4860	syncUpd.exe	103
PID 4860 wrote to memory of 1404	4860	syncUpd.exe	103
PID 1404 wrote to memory of 3056	1404	cmd.exe	105
PID 1404 wrote to memory of 3056	1404	cmd.exe	105
PID 1404 wrote to memory of 3056	1404	cmd.exe	105
PID 3056 wrote to memory of 1924	3056	JJECGCBGDB.exe	106
PID 3056 wrote to memory of 1924	3056	JJECGCBGDB.exe	106
PID 3056 wrote to memory of 1924	3056	JJECGCBGDB.exe	106
PID 1924 wrote to memory of 4484	1924	cmd.exe	108
PID 1924 wrote to memory of 4484	1924	cmd.exe	108
PID 1924 wrote to memory of 4484	1924	cmd.exe	108

C:\Users\Admin\AppData\Local\Temp\$TEMP\syncUpd.exe
"C:\Users\Admin\AppData\Local\Temp\$TEMP\syncUpd.exe"
1⤵
- Checks computer location settings
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4860
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\JJECGCBGDB.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1404
- - C:\Users\Admin\AppData\Local\Temp\JJECGCBGDB.exe
    "C:\Users\Admin\AppData\Local\Temp\JJECGCBGDB.exe"
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:3056
  - - 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\JJECGCBGDB.exe
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1924
    - - C:\Windows\SysWOW64\PING.EXE
        
        ping 2.2.2.2 -n 1 -w 3000
        5⤵
        Runs ping.exe
        
        PID:4484

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

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:\ProgramData\Are.docx

Filesize
11KB

MD5
a33e5b189842c5867f46566bdbf7a095

SHA1
e1c06359f6a76da90d19e8fd95e79c832edb3196

SHA256
5abf8e3d1f78de7b09d7f6fb87f9e80e60caacf13ef3c1289665653dacd7c454

SHA512
f2ad3812ec9b915e9618539b0f103f2e9acaad25fbbacd84941c954ce070af231324e83a4621e951c1dbae8d40d50410954e40dd52bbd46e34c54b0d1957407b

Download Submit
C:\ProgramData\mozglue.dll

Filesize
593KB

MD5
c8fd9be83bc728cc04beffafc2907fe9

SHA1
95ab9f701e0024cedfbd312bcfe4e726744c4f2e

SHA256
ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

SHA512
fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

Download Submit
C:\ProgramData\nss3.dll

Filesize
2.0MB

MD5
1cc453cdf74f31e4d913ff9c10acdde2

SHA1
6e85eae544d6e965f15fa5c39700fa7202f3aafe

SHA256
ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

SHA512
dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

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

Filesize
101KB

MD5
42b838cf8bdf67400525e128d917f6e0

SHA1
a578f6faec738912dba8c41e7abe1502c46d0cae

SHA256
0e4ffba62ce9a464aa1b7ff9f1e55ace8f51ff1e15102d856f801a81f8b4607d

SHA512
f64b39d885375251ab7db72c57dc5b5095f0c6412169f1035d1f6a25b8415a2a01004d06bfa0267cf683ef7dea7a9f969ad43fde5a4376f1fcb65a57403433c0

Download Submit
memory/3056-101-0x0000000005990000-0x00000000059A0000-memory.dmp

Filesize
64KB

Download
memory/3056-100-0x0000000074670000-0x0000000074E20000-memory.dmp

Filesize
7.7MB

Download
memory/3056-98-0x0000000005990000-0x00000000059A0000-memory.dmp

Filesize
64KB

Download
memory/3056-97-0x0000000074670000-0x0000000074E20000-memory.dmp

Filesize
7.7MB

Download
memory/3056-96-0x0000000000FD0000-0x0000000000FEE000-memory.dmp

Filesize
120KB

Download
memory/4860-5-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/4860-79-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/4860-75-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/4860-92-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/4860-57-0x00000000009C0000-0x0000000000AC0000-memory.dmp

Filesize
1024KB

Download
memory/4860-56-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/4860-1-0x00000000009C0000-0x0000000000AC0000-memory.dmp

Filesize
1024KB

Download
memory/4860-4-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/4860-3-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/4860-2-0x00000000008D0000-0x00000000008F7000-memory.dmp

Filesize
156KB

Download