asyncrat | 04edbe92379948c681622b930ff4ab922425e2b33e48075f23b46121d8959e80

General

Target
04edbe92379948c681622b930ff4ab922425e2b33e48075f23b46121d8959e80.exe
Size 45KB
Sample260804-2bae8a1hmg
SHA256 04edbe92379948c681622b930ff4ab922425e2b33e48075f23b46121d8959e80
MD5 47413e90d33518023968c0af6e9d664d
SHA1 ad867161c071cc4d880745b2c89dcc50be52f623
SHA512 6250b386ef1b9b805a8364e37f3b9579f227f71b71985822b661033a016fdb22928f2b3174a8fbe423642119582682862866cb9964c7d2cc0d3d69739fc358d5
SSDEEP 768:cu7m/5THrq+CWUoDuMmo2qF8mJ5G6ROPINzjbsgX3iam0lBDZUx:cu7e5TH2A2nmD33N3bjXS70rdUx
TLSH
T166232B003BE8822BF27E4F78ACF26245467AF6633603D54D1CC451DB5613FC69A42AFA
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

default command_and_control defense_evasion discovery execution asyncrat persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

phimsexvnn.com:80
phimsexvnn.com:22
phimsexvnn.com:8080
phimsexvnn.com:8880
phimsexvnn.com:2052
phimsexvnn.com:2082
phimsexvnn.com:2086
phimsexvnn.com:2095
phimsexvnn.com:443
phimsexvnn.com:2053
phimsexvnn.com:2083
phimsexvnn.com:2087
phimsexvnn.com:2096
phimsexvnn.com:8443
www.phimsexvnn.com:80
www.phimsexvnn.com:22
www.phimsexvnn.com:8080
www.phimsexvnn.com:8880
www.phimsexvnn.com:2052
www.phimsexvnn.com:2082
www.phimsexvnn.com:2086
www.phimsexvnn.com:2095
www.phimsexvnn.com:443
www.phimsexvnn.com:2053
www.phimsexvnn.com:2083
www.phimsexvnn.com:2087
www.phimsexvnn.com:2096
www.phimsexvnn.com:8443
nanocore.phimsexvnn.com:80
nanocore.phimsexvnn.com:22
nanocore.phimsexvnn.com:8080
nanocore.phimsexvnn.com:8880
nanocore.phimsexvnn.com:2052
nanocore.phimsexvnn.com:2082
nanocore.phimsexvnn.com:2086
nanocore.phimsexvnn.com:2095
nanocore.phimsexvnn.com:443
nanocore.phimsexvnn.com:2053
nanocore.phimsexvnn.com:2083
nanocore.phimsexvnn.com:2087
nanocore.phimsexvnn.com:2096
nanocore.phimsexvnn.com:8443
notpetya.phimsexvnn.com:80
notpetya.phimsexvnn.com:22
notpetya.phimsexvnn.com:8080
notpetya.phimsexvnn.com:8880
notpetya.phimsexvnn.com:2052
notpetya.phimsexvnn.com:2082
notpetya.phimsexvnn.com:2086
notpetya.phimsexvnn.com:2095
notpetya.phimsexvnn.com:443
notpetya.phimsexvnn.com:2053
notpetya.phimsexvnn.com:2083
notpetya.phimsexvnn.com:2087
notpetya.phimsexvnn.com:2096
notpetya.phimsexvnn.com:8443

Mutex

re2jaRa7G7AB

Attributes

delay
0
install
true
install_file
7zcue.exe
install_folder
%AppData%

aes.plain

Signatures

Family: AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x00060000000231d3-8.dat	family_asyncrat

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-1-5-21-1074038928-2032447174-945360078-1000\Control Panel\International\Geo\Nation	04edbe92379948c681622b930ff4ab922425e2b33e48075f23b46121d8959e80.exe

Executes dropped EXE 2 IoCs

pid	Process
4476	7zcue.exe
3476	7zcue.exe

Outbound SSH connection to public host 2 TTPs 4 IoCs

SSH is used for remote access. This may indicate SSH host discovery, encrypted C2 traffic, or data exfiltration.

command_and_control

Protocol Tunneling

T1572

Network Service Discovery

T1046

description	flow	ioc	pid	Process
SSH destination	94	172.67.132.249:22	4476	7zcue.exe
SSH destination	95	104.21.5.48:22	4476	7zcue.exe
SSH destination	34	172.67.132.249:22	4476	7zcue.exe
SSH destination	47	104.21.5.48:22	4476	7zcue.exe

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

System Information Discovery
T1082

Executes a command shell one-liner 1 TTPs 2 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
1196	cmd.exe
2392	cmd.exe

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	7zcue.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	04edbe92379948c681622b930ff4ab922425e2b33e48075f23b46121d8959e80.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7zcue.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
3732	timeout.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
3916	schtasks.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
1592	04edbe92379948c681622b930ff4ab922425e2b33e48075f23b46121d8959e80.exe
1592	04edbe92379948c681622b930ff4ab922425e2b33e48075f23b46121d8959e80.exe
1592	04edbe92379948c681622b930ff4ab922425e2b33e48075f23b46121d8959e80.exe
1592	04edbe92379948c681622b930ff4ab922425e2b33e48075f23b46121d8959e80.exe
1592	04edbe92379948c681622b930ff4ab922425e2b33e48075f23b46121d8959e80.exe
1592	04edbe92379948c681622b930ff4ab922425e2b33e48075f23b46121d8959e80.exe
1592	04edbe92379948c681622b930ff4ab922425e2b33e48075f23b46121d8959e80.exe
1592	04edbe92379948c681622b930ff4ab922425e2b33e48075f23b46121d8959e80.exe
1592	04edbe92379948c681622b930ff4ab922425e2b33e48075f23b46121d8959e80.exe
1592	04edbe92379948c681622b930ff4ab922425e2b33e48075f23b46121d8959e80.exe
1592	04edbe92379948c681622b930ff4ab922425e2b33e48075f23b46121d8959e80.exe
1592	04edbe92379948c681622b930ff4ab922425e2b33e48075f23b46121d8959e80.exe
1592	04edbe92379948c681622b930ff4ab922425e2b33e48075f23b46121d8959e80.exe
1592	04edbe92379948c681622b930ff4ab922425e2b33e48075f23b46121d8959e80.exe
1592	04edbe92379948c681622b930ff4ab922425e2b33e48075f23b46121d8959e80.exe
1592	04edbe92379948c681622b930ff4ab922425e2b33e48075f23b46121d8959e80.exe
1592	04edbe92379948c681622b930ff4ab922425e2b33e48075f23b46121d8959e80.exe
1592	04edbe92379948c681622b930ff4ab922425e2b33e48075f23b46121d8959e80.exe
1592	04edbe92379948c681622b930ff4ab922425e2b33e48075f23b46121d8959e80.exe
1592	04edbe92379948c681622b930ff4ab922425e2b33e48075f23b46121d8959e80.exe
1592	04edbe92379948c681622b930ff4ab922425e2b33e48075f23b46121d8959e80.exe
1592	04edbe92379948c681622b930ff4ab922425e2b33e48075f23b46121d8959e80.exe
1592	04edbe92379948c681622b930ff4ab922425e2b33e48075f23b46121d8959e80.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1592	04edbe92379948c681622b930ff4ab922425e2b33e48075f23b46121d8959e80.exe
Token: SeDebugPrivilege	4476	7zcue.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1592 wrote to memory of 1196	1592	04edbe92379948c681622b930ff4ab922425e2b33e48075f23b46121d8959e80.exe	87
PID 1592 wrote to memory of 2392	1592	04edbe92379948c681622b930ff4ab922425e2b33e48075f23b46121d8959e80.exe	90
PID 2392 wrote to memory of 3732	2392	cmd.exe	92
PID 1196 wrote to memory of 3916	1196	cmd.exe	93
PID 2392 wrote to memory of 3476	2392	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\04edbe92379948c681622b930ff4ab922425e2b33e48075f23b46121d8959e80.exe
"C:\Users\Admin\AppData\Local\Temp\04edbe92379948c681622b930ff4ab922425e2b33e48075f23b46121d8959e80.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1592
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "7zcue" /tr '"C:\Users\Admin\AppData\Roaming\7zcue.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1196
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "7zcue" /tr '"C:\Users\Admin\AppData\Roaming\7zcue.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:3916
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp6898.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2392
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:3732
- - C:\Users\Admin\AppData\Roaming\7zcue.exe
    "C:\Users\Admin\AppData\Roaming\7zcue.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3476

C:\Users\Admin\AppData\Roaming\7zcue.exe
"C:\Users\Admin\AppData\Roaming\7zcue.exe"
1⤵
- Executes dropped EXE
- Outbound SSH connection to public host
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:4476

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Windows Command Shell

1

T1059.003

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Network Service Discovery

Query Registry

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Protocol Tunneling

1

T1572

Exfiltration

Impact

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Downloads

tmp6898.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp6898.tmp.bat
Size 149B
SHA256 07345b46f45e962b01274325077cb5120d8c03bfeb6a48a2eac71fa050223474
MD5 ddd9ecacd986b67e0f834127c43b192a
SHA1 e2227a9d1286c88f976b397767a3dafda75e0845
SHA512 8ce7bf190e51a27111e84d28b1f519c9590a487255d6ac1dc004e207590083e8c9227dbfc922c4dd4739651ddd4c0fec3abf7c9844b0efb291e2a1cf21099373
TLSH
T1C5C02BC255C6EB1E2805185702FBD5ADA1B66C1D3F40BBA0C348804E1280459F0DB382
MD5 SHA1 SHA512 TLSH

Submit Download

7zcue.exe

Path C:\Users\Admin\AppData\Roaming\7zcue.exe
Size 45KB
SHA256 04edbe92379948c681622b930ff4ab922425e2b33e48075f23b46121d8959e80
MD5 47413e90d33518023968c0af6e9d664d
SHA1 ad867161c071cc4d880745b2c89dcc50be52f623
SHA512 6250b386ef1b9b805a8364e37f3b9579f227f71b71985822b661033a016fdb22928f2b3174a8fbe423642119582682862866cb9964c7d2cc0d3d69739fc358d5
SSDEEP 768:cu7m/5THrq+CWUoDuMmo2qF8mJ5G6ROPINzjbsgX3iam0lBDZUx:cu7e5TH2A2nmD33N3bjXS70rdUx
TLSH
T166232B003BE8822BF27E4F78ACF26245467AF6633603D54D1CC451DB5613FC69A42AFA
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1592-0-0x0000000000CE0000-0x0000000000CF2000-memory.dmp

Download

memory/1592-1-0x0000000005700000-0x0000000005710000-memory.dmp

Download

memory/1592-2-0x0000000005710000-0x00000000057AC000-memory.dmp

Download

memory/4476-10-0x0000000004FA0000-0x0000000004FB0000-memory.dmp

Download

memory/4476-13-0x0000000004FA0000-0x0000000004FB0000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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