Malware Analysis Report

2024-09-22 06:39

Sample ID 240619-cafhea1hqa
Target f7d1b2ecb7f47ed1311ed562bd1565f2e849d26e0c076e6ec6125d535bf17c11.exe
SHA256 f7d1b2ecb7f47ed1311ed562bd1565f2e849d26e0c076e6ec6125d535bf17c11
Tags
asyncrat default rat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

f7d1b2ecb7f47ed1311ed562bd1565f2e849d26e0c076e6ec6125d535bf17c11

Threat Level: Known bad

The file f7d1b2ecb7f47ed1311ed562bd1565f2e849d26e0c076e6ec6125d535bf17c11.exe was found to be: Known bad.

Malicious Activity Summary

asyncrat default rat

AsyncRat

Async RAT payload

Detects executables containing the string DcRatBy

Detects executables attemping to enumerate video devices using WMI

Executes dropped EXE

Checks computer location settings

Unsigned PE

Enumerates physical storage devices

Delays execution with timeout.exe

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Uses Task Scheduler COM API

Scheduled Task/Job: Scheduled Task

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-06-19 01:52

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-19 01:52

Reported

2024-06-19 01:54

Platform

win10v2004-20240508-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f7d1b2ecb7f47ed1311ed562bd1565f2e849d26e0c076e6ec6125d535bf17c11.exe"

Signatures

AsyncRat

rat asyncrat

Async RAT payload

rat
Description Indicator Process Target
N/A N/A N/A N/A

Detects executables attemping to enumerate video devices using WMI

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Detects executables containing the string DcRatBy

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\Infected.exe N/A
Key value queried \REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\f7d1b2ecb7f47ed1311ed562bd1565f2e849d26e0c076e6ec6125d535bf17c11.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Infected.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\lulz.exe N/A

Enumerates physical storage devices

Delays execution with timeout.exe

evasion
Description Indicator Process Target
N/A N/A C:\Windows\system32\timeout.exe N/A

Scheduled Task/Job: Scheduled Task

persistence execution
Description Indicator Process Target
N/A N/A C:\Windows\system32\schtasks.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\f7d1b2ecb7f47ed1311ed562bd1565f2e849d26e0c076e6ec6125d535bf17c11.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Infected.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Infected.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\lulz.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\lulz.exe N/A

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\f7d1b2ecb7f47ed1311ed562bd1565f2e849d26e0c076e6ec6125d535bf17c11.exe

"C:\Users\Admin\AppData\Local\Temp\f7d1b2ecb7f47ed1311ed562bd1565f2e849d26e0c076e6ec6125d535bf17c11.exe"

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

"C:\Users\Admin\AppData\Local\Temp\Infected.exe"

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "lulz" /tr '"C:\Users\Admin\AppData\Roaming\lulz.exe"' & exit

C:\Windows\system32\cmd.exe

C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp53CD.tmp.bat""

C:\Windows\system32\schtasks.exe

schtasks /create /f /sc onlogon /rl highest /tn "lulz" /tr '"C:\Users\Admin\AppData\Roaming\lulz.exe"'

C:\Windows\system32\timeout.exe

timeout 3

C:\Users\Admin\AppData\Roaming\lulz.exe

"C:\Users\Admin\AppData\Roaming\lulz.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 doffuovouvvufoz97964d-39377.portmap.host udp
US 8.8.8.8:53 doffuovouvvufoz97964d-39377.portmap.host udp
N/A 127.0.0.1:7771 tcp
US 8.8.8.8:53 doffuovouvvufoz97964d-39377.portmap.host udp
US 8.8.8.8:53 doffuovouvvufoz97964d-39377.portmap.host udp
US 52.111.229.48:443 tcp
US 8.8.8.8:53 doffuovouvvufoz97964d-39377.portmap.host udp
US 8.8.8.8:53 doffuovouvvufoz97964d-39377.portmap.host udp
US 8.8.8.8:53 doffuovouvvufoz97964d-39377.portmap.host udp
N/A 127.0.0.1:7771 tcp
N/A 127.0.0.1:7771 tcp
US 8.8.8.8:53 doffuovouvvufoz97964d-39377.portmap.host udp

Files

memory/4296-0-0x00007FF99AA53000-0x00007FF99AA55000-memory.dmp

memory/4296-1-0x000002506CD50000-0x000002506CE70000-memory.dmp

memory/4296-2-0x00007FF99AA50000-0x00007FF99B511000-memory.dmp

memory/4296-3-0x00007FF99AA50000-0x00007FF99B511000-memory.dmp

memory/4296-4-0x00000250721A0000-0x000002507226C000-memory.dmp

memory/4296-6-0x00007FF99AA50000-0x00007FF99B511000-memory.dmp

memory/4296-7-0x00007FF99AA50000-0x00007FF99B511000-memory.dmp

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

MD5 b79066a5172f1508c1b9a8d02e9edd29
SHA1 08a74b0096e1df0043246e65bfe5861af4611515
SHA256 66eb0f1ec9845025074d4e91f6a9f5a1a91fca45f9a59bbdb5d718ba84948674
SHA512 033496e0033a0c359efbf2dbf61fa9c41804c26d3271b34b1b320598d9f3e9ea0b3276715eb99f77e50c62f3561f7fb4ad195f5b37c05430b66d0b6cb0489375

memory/2948-18-0x0000000000FF0000-0x0000000001006000-memory.dmp

memory/2948-19-0x00007FF99AA50000-0x00007FF99B511000-memory.dmp

memory/2948-20-0x00007FF99AA50000-0x00007FF99B511000-memory.dmp

memory/2948-25-0x00007FF99AA50000-0x00007FF99B511000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmp53CD.tmp.bat

MD5 a9e9084ac7644e172a79e195021ff1b5
SHA1 32b41c6af9a7535dcaa84c94152201804651850e
SHA256 b432ef1f92232d667cfc24f60e9fefe8f7d8e7e2c28382409361a1f50c34beac
SHA512 8361f06e89a15db0233b184068e2a5c794e4c587c89ae8ccbe4824e2e5cf642bfa0c74ec2d2b4cca48ff25139cbd928219f2daca18bdb58136a0f92c03326fcb

memory/4296-30-0x00007FF99AA50000-0x00007FF99B511000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-19 01:52

Reported

2024-06-19 01:54

Platform

win7-20240221-en

Max time kernel

146s

Max time network

141s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f7d1b2ecb7f47ed1311ed562bd1565f2e849d26e0c076e6ec6125d535bf17c11.exe"

Signatures

AsyncRat

rat asyncrat

Async RAT payload

rat
Description Indicator Process Target
N/A N/A N/A N/A

Detects executables attemping to enumerate video devices using WMI

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Detects executables containing the string DcRatBy

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Infected.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\lulz.exe N/A

Enumerates physical storage devices

Delays execution with timeout.exe

evasion
Description Indicator Process Target
N/A N/A C:\Windows\system32\timeout.exe N/A

Scheduled Task/Job: Scheduled Task

persistence execution
Description Indicator Process Target
N/A N/A C:\Windows\system32\schtasks.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Infected.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Infected.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Infected.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\f7d1b2ecb7f47ed1311ed562bd1565f2e849d26e0c076e6ec6125d535bf17c11.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Infected.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Infected.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\lulz.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\lulz.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1096 wrote to memory of 1160 N/A C:\Users\Admin\AppData\Local\Temp\f7d1b2ecb7f47ed1311ed562bd1565f2e849d26e0c076e6ec6125d535bf17c11.exe C:\Users\Admin\AppData\Local\Temp\Infected.exe
PID 1096 wrote to memory of 1160 N/A C:\Users\Admin\AppData\Local\Temp\f7d1b2ecb7f47ed1311ed562bd1565f2e849d26e0c076e6ec6125d535bf17c11.exe C:\Users\Admin\AppData\Local\Temp\Infected.exe
PID 1096 wrote to memory of 1160 N/A C:\Users\Admin\AppData\Local\Temp\f7d1b2ecb7f47ed1311ed562bd1565f2e849d26e0c076e6ec6125d535bf17c11.exe C:\Users\Admin\AppData\Local\Temp\Infected.exe
PID 1160 wrote to memory of 2828 N/A C:\Users\Admin\AppData\Local\Temp\Infected.exe C:\Windows\System32\cmd.exe
PID 1160 wrote to memory of 2828 N/A C:\Users\Admin\AppData\Local\Temp\Infected.exe C:\Windows\System32\cmd.exe
PID 1160 wrote to memory of 2828 N/A C:\Users\Admin\AppData\Local\Temp\Infected.exe C:\Windows\System32\cmd.exe
PID 1160 wrote to memory of 2568 N/A C:\Users\Admin\AppData\Local\Temp\Infected.exe C:\Windows\system32\cmd.exe
PID 1160 wrote to memory of 2568 N/A C:\Users\Admin\AppData\Local\Temp\Infected.exe C:\Windows\system32\cmd.exe
PID 1160 wrote to memory of 2568 N/A C:\Users\Admin\AppData\Local\Temp\Infected.exe C:\Windows\system32\cmd.exe
PID 2828 wrote to memory of 2544 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\schtasks.exe
PID 2828 wrote to memory of 2544 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\schtasks.exe
PID 2828 wrote to memory of 2544 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\schtasks.exe
PID 2568 wrote to memory of 2444 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\timeout.exe
PID 2568 wrote to memory of 2444 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\timeout.exe
PID 2568 wrote to memory of 2444 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\timeout.exe
PID 2568 wrote to memory of 2504 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Roaming\lulz.exe
PID 2568 wrote to memory of 2504 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Roaming\lulz.exe
PID 2568 wrote to memory of 2504 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Roaming\lulz.exe

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\f7d1b2ecb7f47ed1311ed562bd1565f2e849d26e0c076e6ec6125d535bf17c11.exe

"C:\Users\Admin\AppData\Local\Temp\f7d1b2ecb7f47ed1311ed562bd1565f2e849d26e0c076e6ec6125d535bf17c11.exe"

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

"C:\Users\Admin\AppData\Local\Temp\Infected.exe"

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "lulz" /tr '"C:\Users\Admin\AppData\Roaming\lulz.exe"' & exit

C:\Windows\system32\cmd.exe

cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp314D.tmp.bat""

C:\Windows\system32\schtasks.exe

schtasks /create /f /sc onlogon /rl highest /tn "lulz" /tr '"C:\Users\Admin\AppData\Roaming\lulz.exe"'

C:\Windows\system32\timeout.exe

timeout 3

C:\Users\Admin\AppData\Roaming\lulz.exe

"C:\Users\Admin\AppData\Roaming\lulz.exe"

Network

Country Destination Domain Proto
N/A 127.0.0.1:7771 tcp
N/A 127.0.0.1:7771 tcp
US 8.8.8.8:53 doffuovouvvufoz97964d-39377.portmap.host udp
DE 193.161.193.99:39377 doffuovouvvufoz97964d-39377.portmap.host tcp
N/A 127.0.0.1:7771 tcp
DE 193.161.193.99:39377 doffuovouvvufoz97964d-39377.portmap.host tcp
N/A 127.0.0.1:7771 tcp
N/A 127.0.0.1:7771 tcp
N/A 127.0.0.1:7771 tcp
N/A 127.0.0.1:7771 tcp
DE 193.161.193.99:39377 doffuovouvvufoz97964d-39377.portmap.host tcp
DE 193.161.193.99:39377 doffuovouvvufoz97964d-39377.portmap.host tcp
N/A 127.0.0.1:7771 tcp
N/A 127.0.0.1:7771 tcp
DE 193.161.193.99:39377 doffuovouvvufoz97964d-39377.portmap.host tcp
DE 193.161.193.99:39377 doffuovouvvufoz97964d-39377.portmap.host tcp
DE 193.161.193.99:39377 doffuovouvvufoz97964d-39377.portmap.host tcp
DE 193.161.193.99:39377 doffuovouvvufoz97964d-39377.portmap.host tcp
N/A 127.0.0.1:7771 tcp
N/A 127.0.0.1:7771 tcp
N/A 127.0.0.1:7771 tcp
DE 193.161.193.99:39377 doffuovouvvufoz97964d-39377.portmap.host tcp
DE 193.161.193.99:39377 doffuovouvvufoz97964d-39377.portmap.host tcp
N/A 127.0.0.1:7771 tcp

Files

memory/1096-0-0x000007FEF5CD3000-0x000007FEF5CD4000-memory.dmp

memory/1096-1-0x0000000000830000-0x0000000000950000-memory.dmp

memory/1096-2-0x000007FEF5CD0000-0x000007FEF66BC000-memory.dmp

memory/1096-3-0x000007FEF5CD0000-0x000007FEF66BC000-memory.dmp

memory/1096-4-0x000000001AAD0000-0x000000001AB9C000-memory.dmp

memory/1096-6-0x000007FEF5CD0000-0x000007FEF66BC000-memory.dmp

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

MD5 b79066a5172f1508c1b9a8d02e9edd29
SHA1 08a74b0096e1df0043246e65bfe5861af4611515
SHA256 66eb0f1ec9845025074d4e91f6a9f5a1a91fca45f9a59bbdb5d718ba84948674
SHA512 033496e0033a0c359efbf2dbf61fa9c41804c26d3271b34b1b320598d9f3e9ea0b3276715eb99f77e50c62f3561f7fb4ad195f5b37c05430b66d0b6cb0489375

memory/1096-9-0x000007FEF5CD0000-0x000007FEF66BC000-memory.dmp

memory/1160-12-0x0000000000CA0000-0x0000000000CB6000-memory.dmp

memory/1160-13-0x000007FEF5CD0000-0x000007FEF66BC000-memory.dmp

memory/1160-14-0x000007FEF5CD0000-0x000007FEF66BC000-memory.dmp

memory/1160-15-0x000007FEF5CD0000-0x000007FEF66BC000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmp314D.tmp.bat

MD5 50ebb10f84c199bbb0d167297775e637
SHA1 811196b1c9d1f927c93f3e6dea22a4295a89d0d2
SHA256 a895634cc78e71393bb2a05a89a1bed6a3985fb8c7d9b2deb3b2109b3c39f3eb
SHA512 9ec3cb9a95d575fdd116878a58aacb4584060e192c19f2bdc5bd70c2fd8f363429ddf2a866f020ca75a1cbfb1a2978b752f403fdc700e3c13338ddff85b7434a

memory/1160-24-0x000007FEF5CD0000-0x000007FEF66BC000-memory.dmp

memory/2504-29-0x0000000000CC0000-0x0000000000CD6000-memory.dmp

memory/1096-30-0x000007FEF5CD3000-0x000007FEF5CD4000-memory.dmp

memory/1096-31-0x000007FEF5CD0000-0x000007FEF66BC000-memory.dmp