asyncrat | 9b608fcfcff20713072deb68b58dd218cc10f880b5c85a7903aec99d9471f269

General

Target

9b608fcfcff20713072deb68b58dd218cc10f880b5c85a7903aec99d9471f269.exe
Size

315KB
MD5

42ffde5af3d66024c0699f14922bb1da
SHA1

b4019d8834f565877ead605a6930e5fdb1bdcfa1
SHA256

9b608fcfcff20713072deb68b58dd218cc10f880b5c85a7903aec99d9471f269
SHA512

cef54ced9dd019f24cd8619e3fd989a8ca146680ffb9b98217941068d79c26a38476d696d2a6c91c69fde70e3b8f25f05c18462682b26486f693c16badcd82fe
SSDEEP

6144:D6xqzHOWLMGBgPcpdrVVsqy3WmSNRbNqfWvC:OxqzHOM/HVVs/3WNbMfWvC

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

40.75.8.74:7707

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
false
install_folder
%AppData%

aes.plain

Extracted

Family

asyncrat

Version

0.5.7A

Botnet

Default

C2

23.102.129.234:7707

Mutex

uvkcjjugzqls

Attributes

delay
1
install
false
install_file
svchost.exe
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
rat asyncrat

Async RAT payload 6 IoCs

rat

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\Cuubz.exe	asyncrat
C:\Users\Admin\AppData\Local\Temp\Cuubz.exe	asyncrat
behavioral2/memory/4468-140-0x0000000000140000-0x0000000000152000-memory.dmp	asyncrat
C:\Users\Admin\AppData\Local\Temp\Izkemwkdhqej.exe	asyncrat
C:\Users\Admin\AppData\Local\Temp\Izkemwkdhqej.exe	asyncrat
behavioral2/memory/1648-144-0x0000000000A40000-0x0000000000A52000-memory.dmp	asyncrat

Executes dropped EXE 2 IoCs

Processes:

Cuubz.exeIzkemwkdhqej.exe

pid process

4468 Cuubz.exe
1648 Izkemwkdhqej.exe

pid	process
4468	Cuubz.exe
1648	Izkemwkdhqej.exe

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

Processes:

9b608fcfcff20713072deb68b58dd218cc10f880b5c85a7903aec99d9471f269.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	9b608fcfcff20713072deb68b58dd218cc10f880b5c85a7903aec99d9471f269.exe

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

System Information Discovery
T1082
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

9b608fcfcff20713072deb68b58dd218cc10f880b5c85a7903aec99d9471f269.exe

description pid process

Token: SeDebugPrivilege 4684 9b608fcfcff20713072deb68b58dd218cc10f880b5c85a7903aec99d9471f269.exe

description	pid	process
Token: SeDebugPrivilege	4684	9b608fcfcff20713072deb68b58dd218cc10f880b5c85a7903aec99d9471f269.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

9b608fcfcff20713072deb68b58dd218cc10f880b5c85a7903aec99d9471f269.exe

description	pid	process	target process
PID 4684 wrote to memory of 4468	4684	9b608fcfcff20713072deb68b58dd218cc10f880b5c85a7903aec99d9471f269.exe	Cuubz.exe
PID 4684 wrote to memory of 4468	4684	9b608fcfcff20713072deb68b58dd218cc10f880b5c85a7903aec99d9471f269.exe	Cuubz.exe
PID 4684 wrote to memory of 4468	4684	9b608fcfcff20713072deb68b58dd218cc10f880b5c85a7903aec99d9471f269.exe	Cuubz.exe
PID 4684 wrote to memory of 1648	4684	9b608fcfcff20713072deb68b58dd218cc10f880b5c85a7903aec99d9471f269.exe	Izkemwkdhqej.exe
PID 4684 wrote to memory of 1648	4684	9b608fcfcff20713072deb68b58dd218cc10f880b5c85a7903aec99d9471f269.exe	Izkemwkdhqej.exe
PID 4684 wrote to memory of 1648	4684	9b608fcfcff20713072deb68b58dd218cc10f880b5c85a7903aec99d9471f269.exe	Izkemwkdhqej.exe

C:\Users\Admin\AppData\Local\Temp\9b608fcfcff20713072deb68b58dd218cc10f880b5c85a7903aec99d9471f269.exe
"C:\Users\Admin\AppData\Local\Temp\9b608fcfcff20713072deb68b58dd218cc10f880b5c85a7903aec99d9471f269.exe"
1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4684

C:\Users\Admin\AppData\Local\Temp\Cuubz.exe
"C:\Users\Admin\AppData\Local\Temp\Cuubz.exe"
2⤵
- Executes dropped EXE
PID:4468

C:\Users\Admin\AppData\Local\Temp\Izkemwkdhqej.exe
"C:\Users\Admin\AppData\Local\Temp\Izkemwkdhqej.exe"
2⤵
- Executes dropped EXE
PID:1648

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\Cuubz.exe
Filesize
47KB

MD5
96073281c86416ec2a530a8e21431cac

SHA1
3760599c3ad5c487fdd0d67feed2d3527769d2a0

SHA256
e2966044f7a5771d7cae9b568d50672be4067be8e547382dbec13edc94e1e994

SHA512
aab5c5dfc7a1b5115231cde88291a4e8873edc7f79d5278465e15e0ccb5b44adb18dfef06d34bd78f88200b8380fcb3eccc571a2c5db2a8924071745a8524317

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cuubz.exe
Filesize
47KB

MD5
96073281c86416ec2a530a8e21431cac

SHA1
3760599c3ad5c487fdd0d67feed2d3527769d2a0

SHA256
e2966044f7a5771d7cae9b568d50672be4067be8e547382dbec13edc94e1e994

SHA512
aab5c5dfc7a1b5115231cde88291a4e8873edc7f79d5278465e15e0ccb5b44adb18dfef06d34bd78f88200b8380fcb3eccc571a2c5db2a8924071745a8524317

Download Submit
C:\Users\Admin\AppData\Local\Temp\Izkemwkdhqej.exe
Filesize
49KB

MD5
955fec4f0483cf02565ceba73ca2456d

SHA1
93aa63dace4f41464b9fa7c2950635f2cd2bc4b4

SHA256
87db4d2962807c84b27c1c759abb7744e01685be2e7fdda54e95fc502057491e

SHA512
4db6d3ba9492fcdb74c276a3cb46c158a6bbb153532a25210a7d11166403a2aaf1127b6445768106821586f46934ac0a3e60894c554767fdf604cae25b63766d

Download Submit
C:\Users\Admin\AppData\Local\Temp\Izkemwkdhqej.exe
Filesize
49KB

MD5
955fec4f0483cf02565ceba73ca2456d

SHA1
93aa63dace4f41464b9fa7c2950635f2cd2bc4b4

SHA256
87db4d2962807c84b27c1c759abb7744e01685be2e7fdda54e95fc502057491e

SHA512
4db6d3ba9492fcdb74c276a3cb46c158a6bbb153532a25210a7d11166403a2aaf1127b6445768106821586f46934ac0a3e60894c554767fdf604cae25b63766d

Download Submit
memory/1648-141-0x0000000000000000-mapping.dmp

Download
memory/1648-144-0x0000000000A40000-0x0000000000A52000-memory.dmp

Filesize
72KB

Download
memory/4468-137-0x0000000000000000-mapping.dmp

Download
memory/4468-140-0x0000000000140000-0x0000000000152000-memory.dmp

Filesize
72KB

Download
memory/4684-136-0x0000000004B80000-0x0000000004B8A000-memory.dmp

Filesize
40KB

Download
memory/4684-135-0x0000000004D60000-0x0000000004DF2000-memory.dmp

Filesize
584KB

Download
memory/4684-132-0x0000000000110000-0x0000000000166000-memory.dmp

Filesize
344KB

Download
memory/4684-134-0x0000000005270000-0x0000000005814000-memory.dmp

Filesize
5.6MB

Download
memory/4684-133-0x0000000004C00000-0x0000000004C9C000-memory.dmp

Filesize
624KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads