asyncrat | 7eadc4d978577bd39b3941624e385341b278d500cb9f53307bdb75f4009e6319

General

Target
7eadc4d978577bd39b3941624e385341b278d500cb9f53307bdb75f4009e6319.exe
Size 45KB
Sample260804-rsjecay1ft
SHA256 7eadc4d978577bd39b3941624e385341b278d500cb9f53307bdb75f4009e6319
MD5 f37bb3f69b2a43d98defc9014fde311f
SHA1 9e4208ecb317b88289fc5a0c8ada8ce0c6d954f4
SHA512 820fab4e027e45e7873f6f392fc0cca0a9c70ec64db8fcddd86a9be3ec8441bd110600568f80dc4299443df78e968796c0ea8f64f13149ed56f9bfd08e8dd4ba
SSDEEP 768:wuZ8pT1Uu4/cWUeT66mo2q1nLiE0yFjrdjYkk8PIuzjbGgX3igeciwhNIHBDZMx:wuZ8pT1tc2KLBXQBu3bZXSKvydMx
TLSH
T178232B0037E9C12BF2BE4F745DF26145867AF2672603D64A1CC451DB5623FC68A43AFA
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

hentaihay.blog:80
hentaihay.blog:22
hentaihay.blog:8080
hentaihay.blog:8880
hentaihay.blog:2052
hentaihay.blog:2082
hentaihay.blog:2086
hentaihay.blog:2095
hentaihay.blog:443
hentaihay.blog:2053
hentaihay.blog:2083
hentaihay.blog:2087
hentaihay.blog:2096
hentaihay.blog:8443
www.hentaihay.blog:80
www.hentaihay.blog:22
www.hentaihay.blog:8080
www.hentaihay.blog:8880
www.hentaihay.blog:2052
www.hentaihay.blog:2082
www.hentaihay.blog:2086
www.hentaihay.blog:2095
www.hentaihay.blog:443
www.hentaihay.blog:2053
www.hentaihay.blog:2083
www.hentaihay.blog:2087
www.hentaihay.blog:2096
www.hentaihay.blog:8443
client.hentaihay.blog:80
client.hentaihay.blog:22
client.hentaihay.blog:8080
client.hentaihay.blog:8880
client.hentaihay.blog:2052
client.hentaihay.blog:2082
client.hentaihay.blog:2086
client.hentaihay.blog:2095
client.hentaihay.blog:443
client.hentaihay.blog:2053
client.hentaihay.blog:2083
client.hentaihay.blog:2087
client.hentaihay.blog:2096
client.hentaihay.blog:8443
locky.hentaihay.blog:80
locky.hentaihay.blog:22
locky.hentaihay.blog:8080
locky.hentaihay.blog:8880
locky.hentaihay.blog:2052
locky.hentaihay.blog:2082
locky.hentaihay.blog:2086
locky.hentaihay.blog:2095
locky.hentaihay.blog:443
locky.hentaihay.blog:2053
locky.hentaihay.blog:2083
locky.hentaihay.blog:2087
locky.hentaihay.blog:2096
locky.hentaihay.blog:8443

Mutex

tm40kIXeaTGE

Attributes

delay
0
install
true
install_file
fc07.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/0x000f0000000231f3-8.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-1-5-21-3053180483-1881419501-3594244048-1000\Control Panel\International\Geo\Nation	7eadc4d978577bd39b3941624e385341b278d500cb9f53307bdb75f4009e6319.exe

Executes dropped EXE 2 IoCs

pid	Process
5072	fc07.exe
1176	fc07.exe

Outbound SSH connection to public host 2 TTPs 2 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	33	172.67.158.187:22	5072	fc07.exe
SSH destination	45	104.21.73.75:22	5072	fc07.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
2192	cmd.exe
1312	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	fc07.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fc07.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7eadc4d978577bd39b3941624e385341b278d500cb9f53307bdb75f4009e6319.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4232	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
5936	schtasks.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
4956	7eadc4d978577bd39b3941624e385341b278d500cb9f53307bdb75f4009e6319.exe
4956	7eadc4d978577bd39b3941624e385341b278d500cb9f53307bdb75f4009e6319.exe
4956	7eadc4d978577bd39b3941624e385341b278d500cb9f53307bdb75f4009e6319.exe
4956	7eadc4d978577bd39b3941624e385341b278d500cb9f53307bdb75f4009e6319.exe
4956	7eadc4d978577bd39b3941624e385341b278d500cb9f53307bdb75f4009e6319.exe
4956	7eadc4d978577bd39b3941624e385341b278d500cb9f53307bdb75f4009e6319.exe
4956	7eadc4d978577bd39b3941624e385341b278d500cb9f53307bdb75f4009e6319.exe
4956	7eadc4d978577bd39b3941624e385341b278d500cb9f53307bdb75f4009e6319.exe
4956	7eadc4d978577bd39b3941624e385341b278d500cb9f53307bdb75f4009e6319.exe
4956	7eadc4d978577bd39b3941624e385341b278d500cb9f53307bdb75f4009e6319.exe
4956	7eadc4d978577bd39b3941624e385341b278d500cb9f53307bdb75f4009e6319.exe
4956	7eadc4d978577bd39b3941624e385341b278d500cb9f53307bdb75f4009e6319.exe
4956	7eadc4d978577bd39b3941624e385341b278d500cb9f53307bdb75f4009e6319.exe
4956	7eadc4d978577bd39b3941624e385341b278d500cb9f53307bdb75f4009e6319.exe
4956	7eadc4d978577bd39b3941624e385341b278d500cb9f53307bdb75f4009e6319.exe
4956	7eadc4d978577bd39b3941624e385341b278d500cb9f53307bdb75f4009e6319.exe
4956	7eadc4d978577bd39b3941624e385341b278d500cb9f53307bdb75f4009e6319.exe
4956	7eadc4d978577bd39b3941624e385341b278d500cb9f53307bdb75f4009e6319.exe
4956	7eadc4d978577bd39b3941624e385341b278d500cb9f53307bdb75f4009e6319.exe
4956	7eadc4d978577bd39b3941624e385341b278d500cb9f53307bdb75f4009e6319.exe
4956	7eadc4d978577bd39b3941624e385341b278d500cb9f53307bdb75f4009e6319.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4956	7eadc4d978577bd39b3941624e385341b278d500cb9f53307bdb75f4009e6319.exe
Token: SeDebugPrivilege	5072	fc07.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4956 wrote to memory of 2192	4956	7eadc4d978577bd39b3941624e385341b278d500cb9f53307bdb75f4009e6319.exe	84
PID 4956 wrote to memory of 1312	4956	7eadc4d978577bd39b3941624e385341b278d500cb9f53307bdb75f4009e6319.exe	86
PID 1312 wrote to memory of 4232	1312	cmd.exe	88
PID 2192 wrote to memory of 5936	2192	cmd.exe	89
PID 1312 wrote to memory of 1176	1312	cmd.exe	93

C:\Users\Admin\AppData\Local\Temp\7eadc4d978577bd39b3941624e385341b278d500cb9f53307bdb75f4009e6319.exe
"C:\Users\Admin\AppData\Local\Temp\7eadc4d978577bd39b3941624e385341b278d500cb9f53307bdb75f4009e6319.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4956
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "fc07" /tr '"C:\Users\Admin\AppData\Roaming\fc07.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2192
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "fc07" /tr '"C:\Users\Admin\AppData\Roaming\fc07.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:5936
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp9E6E.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1312
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4232
- - C:\Users\Admin\AppData\Roaming\fc07.exe
    "C:\Users\Admin\AppData\Roaming\fc07.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1176

C:\Users\Admin\AppData\Roaming\fc07.exe
"C:\Users\Admin\AppData\Roaming\fc07.exe"
1⤵
- Executes dropped EXE
- Outbound SSH connection to public host
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:5072

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

tmp9E6E.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp9E6E.tmp.bat
Size 148B
SHA256 3b22f8851dd2ab417498ceac6d965e924966e73f619dfc999b54fb6bd370146e
MD5 54bd8ee7e44f2cfc6b03871686eef8d0
SHA1 40447a456a3fdee8cc3a2c640ded1cace1592adf
SHA512 cd81b7fe2884d9f12552d4e0b04422b0a05aac13d451cfca126a6273709ff33d60fe76bb42c3ce840e84a025fa9c27470c3b426fc2010518c410ed7f2ff8815b
TLSH
T1BFC02B4351C5EE0F3805182302FBD8CCE2726C193F80BB40C70A400D56C0848F4D9342
MD5 SHA1 SHA512 TLSH

Submit Download

fc07.exe

Path C:\Users\Admin\AppData\Roaming\fc07.exe
Size 45KB
SHA256 7eadc4d978577bd39b3941624e385341b278d500cb9f53307bdb75f4009e6319
MD5 f37bb3f69b2a43d98defc9014fde311f
SHA1 9e4208ecb317b88289fc5a0c8ada8ce0c6d954f4
SHA512 820fab4e027e45e7873f6f392fc0cca0a9c70ec64db8fcddd86a9be3ec8441bd110600568f80dc4299443df78e968796c0ea8f64f13149ed56f9bfd08e8dd4ba
SSDEEP 768:wuZ8pT1Uu4/cWUeT66mo2q1nLiE0yFjrdjYkk8PIuzjbGgX3igeciwhNIHBDZMx:wuZ8pT1tc2KLBXQBu3bZXSKvydMx
TLSH
T178232B0037E9C12BF2BE4F745DF26145867AF2672603D64A1CC451DB5623FC68A43AFA
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/4956-0-0x0000000000510000-0x0000000000522000-memory.dmp

Download

memory/4956-1-0x0000000004FF0000-0x0000000005000000-memory.dmp

Download

memory/4956-2-0x0000000004ED0000-0x0000000004F6C000-memory.dmp

Download

memory/5072-10-0x0000000004950000-0x0000000004960000-memory.dmp

Download

memory/5072-13-0x0000000004950000-0x0000000004960000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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