asyncrat | 7a557a66e0870d7fa538651217911143eabb63f03fbf78eb65a1ef2517998e40

General

Target
7a557a66e0870d7fa538651217911143eabb63f03fbf78eb65a1ef2517998e40.exe
Size 45KB
Sample260804-2dn2dsfj6y
SHA256 7a557a66e0870d7fa538651217911143eabb63f03fbf78eb65a1ef2517998e40
MD5 3afd3f07091ffc6b8689d3c105f36bdb
SHA1 f7ce0ad84430b845582570514af5b077f0cc6e97
SHA512 87faafed94a512c6ac74c4e6733f90758067d04a6267617e45f00d1921a741bd4ca3d74043be5e1668849afc80a396d733e8d3941af38bd3019ef4f5d3315c5f
SSDEEP 768:5udApTNctooWUS7C+mo2qttDEU66ZjlOPICBzjbUgX3isl+l4iWPZBDZ0x:5udApTNmU2CCsh3CB3b7XSsvbd0x
TLSH
T116231A0037E8822BF2BE4F78ADF26145867AF6633603D5491CC452D75623FC69A426FE
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

xheovlvn.com:80
xheovlvn.com:22
xheovlvn.com:8080
xheovlvn.com:8880
xheovlvn.com:2052
xheovlvn.com:2082
xheovlvn.com:2086
xheovlvn.com:2095
xheovlvn.com:443
xheovlvn.com:2053
xheovlvn.com:2083
xheovlvn.com:2087
xheovlvn.com:2096
xheovlvn.com:8443
www.xheovlvn.com:80
www.xheovlvn.com:22
www.xheovlvn.com:8080
www.xheovlvn.com:8880
www.xheovlvn.com:2052
www.xheovlvn.com:2082
www.xheovlvn.com:2086
www.xheovlvn.com:2095
www.xheovlvn.com:443
www.xheovlvn.com:2053
www.xheovlvn.com:2083
www.xheovlvn.com:2087
www.xheovlvn.com:2096
www.xheovlvn.com:8443
industroyer.xheovlvn.com:80
industroyer.xheovlvn.com:22
industroyer.xheovlvn.com:8080
industroyer.xheovlvn.com:8880
industroyer.xheovlvn.com:2052
industroyer.xheovlvn.com:2082
industroyer.xheovlvn.com:2086
industroyer.xheovlvn.com:2095
industroyer.xheovlvn.com:443
industroyer.xheovlvn.com:2053
industroyer.xheovlvn.com:2083
industroyer.xheovlvn.com:2087
industroyer.xheovlvn.com:2096
industroyer.xheovlvn.com:8443
iloveyou.xheovlvn.com:80
iloveyou.xheovlvn.com:22
iloveyou.xheovlvn.com:8080
iloveyou.xheovlvn.com:8880
iloveyou.xheovlvn.com:2052
iloveyou.xheovlvn.com:2082
iloveyou.xheovlvn.com:2086
iloveyou.xheovlvn.com:2095
iloveyou.xheovlvn.com:443
iloveyou.xheovlvn.com:2053
iloveyou.xheovlvn.com:2083
iloveyou.xheovlvn.com:2087
iloveyou.xheovlvn.com:2096
iloveyou.xheovlvn.com:8443

Mutex

r5YqhuekDgRE

Attributes

delay
0
install
true
install_file
rjftay.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/0x0008000000024457-8.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-1-5-21-204488895-2999877624-296153668-1000\Control Panel\International\Geo\Nation	7a557a66e0870d7fa538651217911143eabb63f03fbf78eb65a1ef2517998e40.exe

Executes dropped EXE 2 IoCs

pid	Process
3488	rjftay.exe
3376	rjftay.exe

Outbound SSH connection to public host 2 TTPs 3 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	74	172.67.146.62:22	3488	rjftay.exe
SSH destination	92	104.21.81.197:22	3488	rjftay.exe
SSH destination	66	104.21.81.197:22	3488	rjftay.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
3016	cmd.exe
2680	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	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rjftay.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rjftay.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7a557a66e0870d7fa538651217911143eabb63f03fbf78eb65a1ef2517998e40.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4368	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
2320	schtasks.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
2020	7a557a66e0870d7fa538651217911143eabb63f03fbf78eb65a1ef2517998e40.exe
2020	7a557a66e0870d7fa538651217911143eabb63f03fbf78eb65a1ef2517998e40.exe
2020	7a557a66e0870d7fa538651217911143eabb63f03fbf78eb65a1ef2517998e40.exe
2020	7a557a66e0870d7fa538651217911143eabb63f03fbf78eb65a1ef2517998e40.exe
2020	7a557a66e0870d7fa538651217911143eabb63f03fbf78eb65a1ef2517998e40.exe
2020	7a557a66e0870d7fa538651217911143eabb63f03fbf78eb65a1ef2517998e40.exe
2020	7a557a66e0870d7fa538651217911143eabb63f03fbf78eb65a1ef2517998e40.exe
2020	7a557a66e0870d7fa538651217911143eabb63f03fbf78eb65a1ef2517998e40.exe
2020	7a557a66e0870d7fa538651217911143eabb63f03fbf78eb65a1ef2517998e40.exe
2020	7a557a66e0870d7fa538651217911143eabb63f03fbf78eb65a1ef2517998e40.exe
2020	7a557a66e0870d7fa538651217911143eabb63f03fbf78eb65a1ef2517998e40.exe
2020	7a557a66e0870d7fa538651217911143eabb63f03fbf78eb65a1ef2517998e40.exe
2020	7a557a66e0870d7fa538651217911143eabb63f03fbf78eb65a1ef2517998e40.exe
2020	7a557a66e0870d7fa538651217911143eabb63f03fbf78eb65a1ef2517998e40.exe
2020	7a557a66e0870d7fa538651217911143eabb63f03fbf78eb65a1ef2517998e40.exe
2020	7a557a66e0870d7fa538651217911143eabb63f03fbf78eb65a1ef2517998e40.exe
2020	7a557a66e0870d7fa538651217911143eabb63f03fbf78eb65a1ef2517998e40.exe
2020	7a557a66e0870d7fa538651217911143eabb63f03fbf78eb65a1ef2517998e40.exe
2020	7a557a66e0870d7fa538651217911143eabb63f03fbf78eb65a1ef2517998e40.exe
2020	7a557a66e0870d7fa538651217911143eabb63f03fbf78eb65a1ef2517998e40.exe
2020	7a557a66e0870d7fa538651217911143eabb63f03fbf78eb65a1ef2517998e40.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2020	7a557a66e0870d7fa538651217911143eabb63f03fbf78eb65a1ef2517998e40.exe
Token: SeDebugPrivilege	3488	rjftay.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2020 wrote to memory of 3016	2020	7a557a66e0870d7fa538651217911143eabb63f03fbf78eb65a1ef2517998e40.exe	85
PID 2020 wrote to memory of 2680	2020	7a557a66e0870d7fa538651217911143eabb63f03fbf78eb65a1ef2517998e40.exe	87
PID 2680 wrote to memory of 4368	2680	cmd.exe	89
PID 3016 wrote to memory of 2320	3016	cmd.exe	90
PID 2680 wrote to memory of 3376	2680	cmd.exe	96

C:\Users\Admin\AppData\Local\Temp\7a557a66e0870d7fa538651217911143eabb63f03fbf78eb65a1ef2517998e40.exe
"C:\Users\Admin\AppData\Local\Temp\7a557a66e0870d7fa538651217911143eabb63f03fbf78eb65a1ef2517998e40.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2020
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "rjftay" /tr '"C:\Users\Admin\AppData\Roaming\rjftay.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3016
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "rjftay" /tr '"C:\Users\Admin\AppData\Roaming\rjftay.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2320
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp536A.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2680
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4368
- - C:\Users\Admin\AppData\Roaming\rjftay.exe
    "C:\Users\Admin\AppData\Roaming\rjftay.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3376

C:\Users\Admin\AppData\Roaming\rjftay.exe
"C:\Users\Admin\AppData\Roaming\rjftay.exe"
1⤵
- Executes dropped EXE
- Outbound SSH connection to public host
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:3488

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

tmp536A.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp536A.tmp.bat
Size 150B
SHA256 18760b7cd87d1dc5491afe3073b33c9024c67f577ca90f5e3aa965e24f60e81f
MD5 9415c7b107d6d4f28a55a9520bf921e3
SHA1 9ca30ea6fb7ea3dc906fce5ae869433409075af3
SHA512 a7103d5dfc1b253fec919920fa0c86bc0339917885f9d35979a8cacace6159a0f7bca793df939a641c2e336478671547b8d6ff1e9c7669b63e38428417403643
TLSH
T190C08C4292C6AA4E7905245306BBD98CA5A26F5A3E40AB00D304504A6A80888E099281
MD5 SHA1 SHA512 TLSH

Submit Download

rjftay.exe

Path C:\Users\Admin\AppData\Roaming\rjftay.exe
Size 45KB
SHA256 7a557a66e0870d7fa538651217911143eabb63f03fbf78eb65a1ef2517998e40
MD5 3afd3f07091ffc6b8689d3c105f36bdb
SHA1 f7ce0ad84430b845582570514af5b077f0cc6e97
SHA512 87faafed94a512c6ac74c4e6733f90758067d04a6267617e45f00d1921a741bd4ca3d74043be5e1668849afc80a396d733e8d3941af38bd3019ef4f5d3315c5f
SSDEEP 768:5udApTNctooWUS7C+mo2qttDEU66ZjlOPICBzjbUgX3isl+l4iWPZBDZ0x:5udApTNmU2CCsh3CB3b7XSsvbd0x
TLSH
T116231A0037E8822BF2BE4F78ADF26145867AF6633603D5491CC452D75623FC69A426FE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2020-0-0x00000000001D0000-0x00000000001E2000-memory.dmp

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memory/2020-1-0x0000000004C70000-0x0000000004C80000-memory.dmp

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memory/2020-2-0x0000000004BB0000-0x0000000004C4C000-memory.dmp

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memory/3488-10-0x0000000005650000-0x0000000005660000-memory.dmp

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memory/3488-13-0x0000000005650000-0x0000000005660000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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