stealc | edf6a05713ee101fc76c1190f5f5d1caffe25ef8a48964359e0bacaa88aa9987

Analysis

max time kernel
145s
max time network
131s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
05-09-2024 12:14

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General

Target

f70af1ea3e7ee9af7e45f56d107c95f5ced56d0811f1a6f30c936ca7a0175a3d.exe
Size

206KB
MD5

ade16b249de80c5d8a459baaac67201c
SHA1

8c795c6c18b99b90d23128413147a160ce0ca78c
SHA256

f70af1ea3e7ee9af7e45f56d107c95f5ced56d0811f1a6f30c936ca7a0175a3d
SHA512

2fb2d8adf690d2abe5476337f05f79c9a9a0b04f409e37d40fa004e2145826590fe91c4bfefdd14f2d826689e9eccb14e55efe60dd3063ac8a6285c9637fb573
SSDEEP

6144:7KDAfd+iDttV/vPJ64KE82nH/VkaAZbEO:7KD0ogttVfJ64KElH/3AZbEO

Score

10^/10

stealc default credential_access discovery spyware stealer

Malware Config

Extracted

Family

stealc

Botnet

default

http://147.45.47.137

Attributes

url_path
/6ecdc9436941ebbd.php

Signatures

Stealc
Stealc is an infostealer written in C++.
stealer stealc
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003
Downloads MZ/PE file

Checks computer location settings 2 TTPs 1 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-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	RegAsm.exe

Executes dropped EXE 2 IoCs

pid	Process
4760	GDGHIDBKJE.exe
4744	oobeldr.exe

Loads dropped DLL 2 IoCs

pid	Process
3040	RegAsm.exe
3040	RegAsm.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
Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
credential_access stealer

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
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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2876 set thread context of 3040	2876	f70af1ea3e7ee9af7e45f56d107c95f5ced56d0811f1a6f30c936ca7a0175a3d.exe	84

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	oobeldr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f70af1ea3e7ee9af7e45f56d107c95f5ced56d0811f1a6f30c936ca7a0175a3d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	GDGHIDBKJE.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

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	RegAsm.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	RegAsm.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
4692	schtasks.exe
4960	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3040	RegAsm.exe
3040	RegAsm.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2876 wrote to memory of 3040	2876	f70af1ea3e7ee9af7e45f56d107c95f5ced56d0811f1a6f30c936ca7a0175a3d.exe	84
PID 2876 wrote to memory of 3040	2876	f70af1ea3e7ee9af7e45f56d107c95f5ced56d0811f1a6f30c936ca7a0175a3d.exe	84
PID 2876 wrote to memory of 3040	2876	f70af1ea3e7ee9af7e45f56d107c95f5ced56d0811f1a6f30c936ca7a0175a3d.exe	84
PID 2876 wrote to memory of 3040	2876	f70af1ea3e7ee9af7e45f56d107c95f5ced56d0811f1a6f30c936ca7a0175a3d.exe	84
PID 2876 wrote to memory of 3040	2876	f70af1ea3e7ee9af7e45f56d107c95f5ced56d0811f1a6f30c936ca7a0175a3d.exe	84
PID 2876 wrote to memory of 3040	2876	f70af1ea3e7ee9af7e45f56d107c95f5ced56d0811f1a6f30c936ca7a0175a3d.exe	84
PID 2876 wrote to memory of 3040	2876	f70af1ea3e7ee9af7e45f56d107c95f5ced56d0811f1a6f30c936ca7a0175a3d.exe	84
PID 2876 wrote to memory of 3040	2876	f70af1ea3e7ee9af7e45f56d107c95f5ced56d0811f1a6f30c936ca7a0175a3d.exe	84
PID 2876 wrote to memory of 3040	2876	f70af1ea3e7ee9af7e45f56d107c95f5ced56d0811f1a6f30c936ca7a0175a3d.exe	84
PID 3040 wrote to memory of 2776	3040	RegAsm.exe	100
PID 3040 wrote to memory of 2776	3040	RegAsm.exe	100
PID 3040 wrote to memory of 2776	3040	RegAsm.exe	100
PID 2776 wrote to memory of 4760	2776	cmd.exe	102
PID 2776 wrote to memory of 4760	2776	cmd.exe	102
PID 2776 wrote to memory of 4760	2776	cmd.exe	102
PID 4760 wrote to memory of 4960	4760	GDGHIDBKJE.exe	103
PID 4760 wrote to memory of 4960	4760	GDGHIDBKJE.exe	103
PID 4760 wrote to memory of 4960	4760	GDGHIDBKJE.exe	103
PID 4744 wrote to memory of 4692	4744	oobeldr.exe	108
PID 4744 wrote to memory of 4692	4744	oobeldr.exe	108
PID 4744 wrote to memory of 4692	4744	oobeldr.exe	108

C:\Users\Admin\AppData\Local\Temp\f70af1ea3e7ee9af7e45f56d107c95f5ced56d0811f1a6f30c936ca7a0175a3d.exe
"C:\Users\Admin\AppData\Local\Temp\f70af1ea3e7ee9af7e45f56d107c95f5ced56d0811f1a6f30c936ca7a0175a3d.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2876
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - Checks computer location settings
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3040
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c start "" "C:\ProgramData\GDGHIDBKJE.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2776
  - - C:\ProgramData\GDGHIDBKJE.exe
      "C:\ProgramData\GDGHIDBKJE.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:4760
    - - C:\Windows\SysWOW64\schtasks.exe
        
        /C /create /F /sc minute /mo 1 /tn "Telemetry Logging" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe"
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:4960

C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4744
- C:\Windows\SysWOW64\schtasks.exe
  /C /create /F /sc minute /mo 1 /tn "Telemetry Logging" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:4692

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\GDGHIDBKJE.exe

Filesize
4.4MB

MD5
af6e384dfabdad52d43cf8429ad8779c

SHA1
c78e8cd8c74ad9d598f591de5e49f73ce3373791

SHA256
f327c2b5ab1d98f0382a35cd78f694d487c74a7290f1ff7be53f42e23021e599

SHA512
b55ba87b275a475e751e13ec9bac2e7f1a3484057844e210168e2256d73d9b6a7c7c7592845d4a3bf8163cf0d479315418a9f3cb8f2f4832af88a06867e3df93

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
memory/2876-1-0x0000000000280000-0x00000000002B8000-memory.dmp

Filesize
224KB

Download
memory/2876-0-0x00000000745CE000-0x00000000745CF000-memory.dmp

Filesize
4KB

Download
memory/2876-7-0x00000000745C0000-0x0000000074D70000-memory.dmp

Filesize
7.7MB

Download
memory/3040-8-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/3040-9-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/3040-6-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/3040-90-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/3040-3-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/3040-98-0x0000000000400000-0x0000000000643000-memory.dmp

Filesize
2.3MB

Download
memory/4744-105-0x0000000000400000-0x0000000000BD9000-memory.dmp

Filesize
7.8MB

Download
memory/4744-109-0x0000000000400000-0x0000000000BD9000-memory.dmp

Filesize
7.8MB

Download
memory/4744-110-0x0000000000400000-0x0000000000BD9000-memory.dmp

Filesize
7.8MB

Download
memory/4760-97-0x0000000000400000-0x0000000000BD9000-memory.dmp

Filesize
7.8MB

Download
memory/4760-99-0x0000000000400000-0x0000000000BD9000-memory.dmp

Filesize
7.8MB

Download
memory/4760-100-0x0000000000400000-0x0000000000BD9000-memory.dmp

Filesize
7.8MB

Download
memory/4760-103-0x0000000000400000-0x0000000000BD9000-memory.dmp

Filesize
7.8MB

Download