b2a5bbacabfa8f6cd6c24f87a5825a8231cce32086d369be612c6b7bdf658dad

Analysis

max time kernel
1783s
max time network
1802s
platform
windows11-21h2_x64
resource
win11-20240426-en
resource tags

arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
submitted
28-05-2024 21:07

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General

Target

Client-built.exe
Size

3.1MB
MD5

fd874e0d6811bcbd5feb812040853642
SHA1

7213c686b0e8cbb6527077eaeb3291791a8f06ba
SHA256

b2a5bbacabfa8f6cd6c24f87a5825a8231cce32086d369be612c6b7bdf658dad
SHA512

3c8265e9d981b0d5ebbd1157b79afb3b31f57f6083f2c5ce6d4658718b5d79faf4358936af76aa4a4e1e94f7803ef6c77e07e782333d9d7003d42ea1de2ffa34
SSDEEP

49152:bvxI22SsaNYfdPBldt698dBcjHLYqQJmzaloGdbhTHHB72eh2NT:bvi22SsaNYfdPBldt6+dBcjHkqQ3

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

$sxr-insta.exe

pid process

3468 $sxr-insta.exe
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task/Job
T1053

Processes:

schtasks.exeschtasks.exe

pid process

1588 schtasks.exe
976 schtasks.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Client-built.exe$sxr-insta.exe

description pid process

Token: SeDebugPrivilege 1292 Client-built.exe
Token: SeDebugPrivilege 3468 $sxr-insta.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

$sxr-insta.exe

pid process

3468 $sxr-insta.exe

pid	process
3468	$sxr-insta.exe

pid	process
1588	schtasks.exe
976	schtasks.exe

description	pid	process
Token: SeDebugPrivilege	1292	Client-built.exe
Token: SeDebugPrivilege	3468	$sxr-insta.exe

pid	process
3468	$sxr-insta.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

Client-built.exe$sxr-insta.exe

description	pid	process	target process
PID 1292 wrote to memory of 1588	1292	Client-built.exe	schtasks.exe
PID 1292 wrote to memory of 1588	1292	Client-built.exe	schtasks.exe
PID 1292 wrote to memory of 3468	1292	Client-built.exe	$sxr-insta.exe
PID 1292 wrote to memory of 3468	1292	Client-built.exe	$sxr-insta.exe
PID 3468 wrote to memory of 976	3468	$sxr-insta.exe	schtasks.exe
PID 3468 wrote to memory of 976	3468	$sxr-insta.exe	schtasks.exe

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\Client-built.exe
"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1292

C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "$sxr-mstha" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\$sxr-start\$sxr-insta.exe" /rl HIGHEST /f
2⤵
- Creates scheduled task(s)
PID:1588

C:\Users\Admin\AppData\Roaming\$sxr-start\$sxr-insta.exe
"C:\Users\Admin\AppData\Roaming\$sxr-start\$sxr-insta.exe"
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3468

C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "$sxr-mstha" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\$sxr-start\$sxr-insta.exe" /rl HIGHEST /f
3⤵
- Creates scheduled task(s)
PID:976

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\$sxr-start\$sxr-insta.exe

Filesize
448KB

MD5
c3b39747f72140b9d8b70de9a55bd54c

SHA1
eb1bbbafe544434433fec4a4125b4d4706517501

SHA256
d5457ac6f16debb98683900a568ba60a9608cb8cfdd78763df74d65aafa8220f

SHA512
05d2c0e898e6694b0b5d4184add5aa5378c4016322d32f65c37b8190dca62a93e482f4c0d4e727eb9e4c6f803309c64477384e23684e533a513baef7adfe1578

Download Submit
C:\Users\Admin\AppData\Roaming\$sxr-start\$sxr-insta.exe

Filesize
2.1MB

MD5
d0ba28e10d4c6eba90dda720d2065a16

SHA1
c6a53e6e1274352d2991900cdcda8bd60146dff0

SHA256
a90132bccbec5339a740fc1384179249a4dfc590e11de2850eba5193ce9a6990

SHA512
ec4915a7b908653601edb9db0f5255b7327080713f61ce6e5b284df23e377bac738813ae6e05be2618e6f56030ce61cb619204dd5dfd29dd0cb9249d788256d7

Download Submit
memory/1292-1-0x00000000001C0000-0x00000000004E4000-memory.dmp

Filesize
3.1MB

Download
memory/1292-0-0x00007FF91E553000-0x00007FF91E555000-memory.dmp

Filesize
8KB

Download
memory/1292-2-0x00007FF91E550000-0x00007FF91F012000-memory.dmp

Filesize
10.8MB

Download
memory/1292-9-0x00007FF91E550000-0x00007FF91F012000-memory.dmp

Filesize
10.8MB

Download
memory/3468-10-0x00007FF91E550000-0x00007FF91F012000-memory.dmp

Filesize
10.8MB

Download
memory/3468-11-0x00007FF91E550000-0x00007FF91F012000-memory.dmp

Filesize
10.8MB

Download
memory/3468-13-0x000000001C660000-0x000000001C712000-memory.dmp

Filesize
712KB

Download
memory/3468-12-0x000000001C550000-0x000000001C5A0000-memory.dmp

Filesize
320KB

Download
memory/3468-14-0x00007FF91E550000-0x00007FF91F012000-memory.dmp

Filesize
10.8MB

Download