stealc | adef8bc5227bb4397214ad83610d98a9dc5d3543d8a4f214d71a00b79717c488

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
01-07-2024 02:03

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General

Target

d4b22461e379bba07e2e2f6cf1833884c0ff656b84afdd3b2284be856f598ae0.exe
Size

4.7MB
MD5

6320d63025e1764e578680e24906def3
SHA1

b452cb8f5fe2b5683b8ea94b90c5d3f415e53832
SHA256

d4b22461e379bba07e2e2f6cf1833884c0ff656b84afdd3b2284be856f598ae0
SHA512

f75d2700fafea373de7f2c4131a650128d38146ef8fd7edef0c186ce3ebc1fb51b116f91596891d68f893a56b30e14035e565a55d0e5d228462c9e3e7a68dc51
SSDEEP

98304:KjG9asZlqf3mTJBMAxu8l+yzWCdlPtclKfWN6D:KjGgsZlqvmT8wu8lZWCzo+

Score

10^/10

stealc vidar spyware stealer

Malware Config

Extracted

Family

vidar

https://t.me/g067n

https://steamcommunity.com/profiles/76561199707802586

Attributes

user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:129.0) Gecko/20100101 Firefox/129.0

Signatures

Detect Vidar Stealer 2 IoCs

stealer

Processes:

resource	yara_rule
behavioral1/memory/2888-80-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7
behavioral1/memory/2888-602-0x0000000000400000-0x0000000000648000-memory.dmp	family_vidar_v7

Stealc
Stealc is an infostealer written in C++.
stealer stealc
Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
Downloads MZ/PE file
Executes dropped EXE 1 IoCs

Processes:

FHJDGHIJDG.exe

pid process

1660 FHJDGHIJDG.exe
Loads dropped DLL 7 IoCs

Processes:

MSBuild.exeWerFault.exe

pid process

2888 MSBuild.exe
2888 MSBuild.exe
2888 MSBuild.exe
2888 MSBuild.exe
320 WerFault.exe
320 WerFault.exe
320 WerFault.exe
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001
Suspicious use of SetThreadContext 1 IoCs

Processes:

d4b22461e379bba07e2e2f6cf1833884c0ff656b84afdd3b2284be856f598ae0.exe

description pid process target process

PID 1736 set thread context of 2888 1736 d4b22461e379bba07e2e2f6cf1833884c0ff656b84afdd3b2284be856f598ae0.exe MSBuild.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

320 1660 WerFault.exe FHJDGHIJDG.exe

pid	process
1660	FHJDGHIJDG.exe

pid	process
2888	MSBuild.exe
2888	MSBuild.exe
2888	MSBuild.exe
2888	MSBuild.exe
320	WerFault.exe
320	WerFault.exe
320	WerFault.exe

description	pid	process	target process
PID 1736 set thread context of 2888	1736	d4b22461e379bba07e2e2f6cf1833884c0ff656b84afdd3b2284be856f598ae0.exe	MSBuild.exe

pid	pid_target	process	target process
320	1660	WerFault.exe	FHJDGHIJDG.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

Processes:

MSBuild.exe

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

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

2396 timeout.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

MSBuild.exe

pid process

2888 MSBuild.exe
2888 MSBuild.exe
2888 MSBuild.exe
2888 MSBuild.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

d4b22461e379bba07e2e2f6cf1833884c0ff656b84afdd3b2284be856f598ae0.exe

description pid process

Token: SeDebugPrivilege 1736 d4b22461e379bba07e2e2f6cf1833884c0ff656b84afdd3b2284be856f598ae0.exe

pid	process
2396	timeout.exe

pid	process
2888	MSBuild.exe
2888	MSBuild.exe
2888	MSBuild.exe
2888	MSBuild.exe

description	pid	process
Token: SeDebugPrivilege	1736	d4b22461e379bba07e2e2f6cf1833884c0ff656b84afdd3b2284be856f598ae0.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

d4b22461e379bba07e2e2f6cf1833884c0ff656b84afdd3b2284be856f598ae0.exeMSBuild.exeFHJDGHIJDG.execmd.exe

description	pid	process	target process
PID 1736 wrote to memory of 2888	1736	d4b22461e379bba07e2e2f6cf1833884c0ff656b84afdd3b2284be856f598ae0.exe	MSBuild.exe
PID 1736 wrote to memory of 2888	1736	d4b22461e379bba07e2e2f6cf1833884c0ff656b84afdd3b2284be856f598ae0.exe	MSBuild.exe
PID 1736 wrote to memory of 2888	1736	d4b22461e379bba07e2e2f6cf1833884c0ff656b84afdd3b2284be856f598ae0.exe	MSBuild.exe
PID 1736 wrote to memory of 2888	1736	d4b22461e379bba07e2e2f6cf1833884c0ff656b84afdd3b2284be856f598ae0.exe	MSBuild.exe
PID 1736 wrote to memory of 2888	1736	d4b22461e379bba07e2e2f6cf1833884c0ff656b84afdd3b2284be856f598ae0.exe	MSBuild.exe
PID 1736 wrote to memory of 2888	1736	d4b22461e379bba07e2e2f6cf1833884c0ff656b84afdd3b2284be856f598ae0.exe	MSBuild.exe
PID 1736 wrote to memory of 2888	1736	d4b22461e379bba07e2e2f6cf1833884c0ff656b84afdd3b2284be856f598ae0.exe	MSBuild.exe
PID 1736 wrote to memory of 2888	1736	d4b22461e379bba07e2e2f6cf1833884c0ff656b84afdd3b2284be856f598ae0.exe	MSBuild.exe
PID 1736 wrote to memory of 2888	1736	d4b22461e379bba07e2e2f6cf1833884c0ff656b84afdd3b2284be856f598ae0.exe	MSBuild.exe
PID 1736 wrote to memory of 2888	1736	d4b22461e379bba07e2e2f6cf1833884c0ff656b84afdd3b2284be856f598ae0.exe	MSBuild.exe
PID 2888 wrote to memory of 1660	2888	MSBuild.exe	FHJDGHIJDG.exe
PID 2888 wrote to memory of 1660	2888	MSBuild.exe	FHJDGHIJDG.exe
PID 2888 wrote to memory of 1660	2888	MSBuild.exe	FHJDGHIJDG.exe
PID 2888 wrote to memory of 1660	2888	MSBuild.exe	FHJDGHIJDG.exe
PID 1660 wrote to memory of 320	1660	FHJDGHIJDG.exe	WerFault.exe
PID 1660 wrote to memory of 320	1660	FHJDGHIJDG.exe	WerFault.exe
PID 1660 wrote to memory of 320	1660	FHJDGHIJDG.exe	WerFault.exe
PID 1660 wrote to memory of 320	1660	FHJDGHIJDG.exe	WerFault.exe
PID 2888 wrote to memory of 2368	2888	MSBuild.exe	cmd.exe
PID 2888 wrote to memory of 2368	2888	MSBuild.exe	cmd.exe
PID 2888 wrote to memory of 2368	2888	MSBuild.exe	cmd.exe
PID 2888 wrote to memory of 2368	2888	MSBuild.exe	cmd.exe
PID 2368 wrote to memory of 2396	2368	cmd.exe	timeout.exe
PID 2368 wrote to memory of 2396	2368	cmd.exe	timeout.exe
PID 2368 wrote to memory of 2396	2368	cmd.exe	timeout.exe
PID 2368 wrote to memory of 2396	2368	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\d4b22461e379bba07e2e2f6cf1833884c0ff656b84afdd3b2284be856f598ae0.exe
"C:\Users\Admin\AppData\Local\Temp\d4b22461e379bba07e2e2f6cf1833884c0ff656b84afdd3b2284be856f598ae0.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1736

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
2⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2888

C:\ProgramData\FHJDGHIJDG.exe
"C:\ProgramData\FHJDGHIJDG.exe"
3⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:1660

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1660 -s 96
4⤵
- Loads dropped DLL
- Program crash
PID:320

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\JKFIDGDHJEGI" & exit
3⤵
- Suspicious use of WriteProcessMemory
PID:2368

C:\Windows\SysWOW64\timeout.exe
timeout /t 10
4⤵
- Delays execution with timeout.exe
PID:2396

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\ProgramData\FHJDGHIJDG.exe
Filesize
516KB

MD5
0309dd0131150796ea99b30a62194fae

SHA1
2df6e334708eae810a74b844fd57e18e9fdc34cd

SHA256
07c09ba5a84f619e5b83a54298ffc58d20b00f14399c7a94b7f02b70efc60f35

SHA512
3d4e5a0718d04fee92d8040880b631107d1e23a6b3bce430d58769179af999c28b99e50c5cd45f283339f7bbb24ffacbf601a5447edb12e28da4517fbfa282e8

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar2ADF.tmp
Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
memory/1736-47-0x0000000000B10000-0x0000000000B25000-memory.dmp

Filesize
84KB

Download
memory/1736-7-0x0000000000B10000-0x0000000000B25000-memory.dmp

Filesize
84KB

Download
memory/1736-5-0x0000000000B10000-0x0000000000B2C000-memory.dmp

Filesize
112KB

Download
memory/1736-43-0x0000000000B10000-0x0000000000B25000-memory.dmp

Filesize
84KB

Download
memory/1736-17-0x0000000000B10000-0x0000000000B25000-memory.dmp

Filesize
84KB

Download
memory/1736-6-0x0000000000B10000-0x0000000000B25000-memory.dmp

Filesize
84KB

Download
memory/1736-63-0x0000000000B10000-0x0000000000B25000-memory.dmp

Filesize
84KB

Download
memory/1736-61-0x0000000000B10000-0x0000000000B25000-memory.dmp

Filesize
84KB

Download
memory/1736-59-0x0000000000B10000-0x0000000000B25000-memory.dmp

Filesize
84KB

Download
memory/1736-57-0x0000000000B10000-0x0000000000B25000-memory.dmp

Filesize
84KB

Download
memory/1736-66-0x0000000074D70000-0x000000007545E000-memory.dmp

Filesize
6.9MB

Download
memory/1736-56-0x0000000000B10000-0x0000000000B25000-memory.dmp

Filesize
84KB

Download
memory/1736-53-0x0000000000B10000-0x0000000000B25000-memory.dmp

Filesize
84KB

Download
memory/1736-52-0x0000000000B10000-0x0000000000B25000-memory.dmp

Filesize
84KB

Download
memory/1736-45-0x0000000000B10000-0x0000000000B25000-memory.dmp

Filesize
84KB

Download
memory/1736-41-0x0000000000B10000-0x0000000000B25000-memory.dmp

Filesize
84KB

Download
memory/1736-2-0x0000000000820000-0x000000000082A000-memory.dmp

Filesize
40KB

Download
memory/1736-65-0x0000000000B10000-0x0000000000B25000-memory.dmp

Filesize
84KB

Download
memory/1736-49-0x0000000000B10000-0x0000000000B25000-memory.dmp

Filesize
84KB

Download
memory/1736-0-0x0000000074D7E000-0x0000000074D7F000-memory.dmp

Filesize
4KB

Download
memory/1736-1-0x0000000000100000-0x00000000005BC000-memory.dmp

Filesize
4.7MB

Download
memory/1736-4-0x0000000004D50000-0x0000000004EC4000-memory.dmp

Filesize
1.5MB

Download
memory/1736-3-0x0000000074D70000-0x000000007545E000-memory.dmp

Filesize
6.9MB

Download
memory/1736-39-0x0000000000B10000-0x0000000000B25000-memory.dmp

Filesize
84KB

Download
memory/1736-38-0x0000000000B10000-0x0000000000B25000-memory.dmp

Filesize
84KB

Download
memory/1736-35-0x0000000000B10000-0x0000000000B25000-memory.dmp

Filesize
84KB

Download
memory/1736-33-0x0000000000B10000-0x0000000000B25000-memory.dmp

Filesize
84KB

Download
memory/1736-31-0x0000000000B10000-0x0000000000B25000-memory.dmp

Filesize
84KB

Download
memory/1736-29-0x0000000000B10000-0x0000000000B25000-memory.dmp

Filesize
84KB

Download
memory/1736-27-0x0000000000B10000-0x0000000000B25000-memory.dmp

Filesize
84KB

Download
memory/1736-25-0x0000000000B10000-0x0000000000B25000-memory.dmp

Filesize
84KB

Download
memory/1736-23-0x0000000000B10000-0x0000000000B25000-memory.dmp

Filesize
84KB

Download
memory/1736-22-0x0000000000B10000-0x0000000000B25000-memory.dmp

Filesize
84KB

Download
memory/1736-19-0x0000000000B10000-0x0000000000B25000-memory.dmp

Filesize
84KB

Download
memory/1736-16-0x0000000000B10000-0x0000000000B25000-memory.dmp

Filesize
84KB

Download
memory/1736-13-0x0000000000B10000-0x0000000000B25000-memory.dmp

Filesize
84KB

Download
memory/1736-11-0x0000000000B10000-0x0000000000B25000-memory.dmp

Filesize
84KB

Download
memory/1736-9-0x0000000000B10000-0x0000000000B25000-memory.dmp

Filesize
84KB

Download
memory/1736-81-0x0000000074D70000-0x000000007545E000-memory.dmp

Filesize
6.9MB

Download
memory/2888-69-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2888-80-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2888-67-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download
memory/2888-602-0x0000000000400000-0x0000000000648000-memory.dmp

Filesize
2.3MB

Download