asyncrat | 57ffcfc243328da9cdf70df23f94bb9e061f3c1aa726e4ae36c46431664c9c26

General

Target
57ffcfc243328da9cdf70df23f94bb9e061f3c1aa726e4ae36c46431664c9c26.exe
Size 45KB
Sample260601-rb7evagv8n
SHA256 57ffcfc243328da9cdf70df23f94bb9e061f3c1aa726e4ae36c46431664c9c26
MD5 53da3ee66913e62649877941bc75cd57
SHA1 11cde16276aa14e909a814c9022d442cf02ef2f8
SHA512 97543dae8b8f09140e981bd2436e8ea77bcc73dedafb9cc599e363875942823e431a538bf069157174f191ee3a159cea8109bb085a88623abde0a1bcfb190a44
SSDEEP 768:BuPi1TVF5l6NWUtb2Hmo2qIL3xY6yZoOPI5zjbIgj3iDbJ0THUBDZjx:BuPi1TV/l12LuPo353bfjSDDdjx
TLSH
T1CA232B003BE8822BF2BE4B78ADF261454A7AE2A37603D54E1CC452D75713FC65A426FD
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

default defense_evasion discovery execution asyncrat persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

haysex18.blog:443
haysex18.blog:80
haysex18.blog:7797
haysex18.blog:8707
haysex18.blog:6620
www.haysex18.blog:443
www.haysex18.blog:80
www.haysex18.blog:7797
www.haysex18.blog:8707
www.haysex18.blog:6620
stuxnet.haysex18.blog:443
stuxnet.haysex18.blog:80
stuxnet.haysex18.blog:7797
stuxnet.haysex18.blog:8707
stuxnet.haysex18.blog:6620
zbot.haysex18.blog:443
zbot.haysex18.blog:80
zbot.haysex18.blog:7797
zbot.haysex18.blog:8707
zbot.haysex18.blog:6620

Mutex

x6BBJKKYyCmQ

Attributes

delay
0
install
true
install_file
9h3sk.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
behavioral2/files/0x001c00000002b2e8-8.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
1648	9h3sk.exe
3088	9h3sk.exe

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

System Information Discovery
T1082

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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	9h3sk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	9h3sk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	57ffcfc243328da9cdf70df23f94bb9e061f3c1aa726e4ae36c46431664c9c26.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
3996	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
4264	schtasks.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

pid	Process
5148	57ffcfc243328da9cdf70df23f94bb9e061f3c1aa726e4ae36c46431664c9c26.exe
5148	57ffcfc243328da9cdf70df23f94bb9e061f3c1aa726e4ae36c46431664c9c26.exe
5148	57ffcfc243328da9cdf70df23f94bb9e061f3c1aa726e4ae36c46431664c9c26.exe
5148	57ffcfc243328da9cdf70df23f94bb9e061f3c1aa726e4ae36c46431664c9c26.exe
5148	57ffcfc243328da9cdf70df23f94bb9e061f3c1aa726e4ae36c46431664c9c26.exe
5148	57ffcfc243328da9cdf70df23f94bb9e061f3c1aa726e4ae36c46431664c9c26.exe
5148	57ffcfc243328da9cdf70df23f94bb9e061f3c1aa726e4ae36c46431664c9c26.exe
5148	57ffcfc243328da9cdf70df23f94bb9e061f3c1aa726e4ae36c46431664c9c26.exe
5148	57ffcfc243328da9cdf70df23f94bb9e061f3c1aa726e4ae36c46431664c9c26.exe
5148	57ffcfc243328da9cdf70df23f94bb9e061f3c1aa726e4ae36c46431664c9c26.exe
5148	57ffcfc243328da9cdf70df23f94bb9e061f3c1aa726e4ae36c46431664c9c26.exe
5148	57ffcfc243328da9cdf70df23f94bb9e061f3c1aa726e4ae36c46431664c9c26.exe
5148	57ffcfc243328da9cdf70df23f94bb9e061f3c1aa726e4ae36c46431664c9c26.exe
5148	57ffcfc243328da9cdf70df23f94bb9e061f3c1aa726e4ae36c46431664c9c26.exe
5148	57ffcfc243328da9cdf70df23f94bb9e061f3c1aa726e4ae36c46431664c9c26.exe
5148	57ffcfc243328da9cdf70df23f94bb9e061f3c1aa726e4ae36c46431664c9c26.exe
5148	57ffcfc243328da9cdf70df23f94bb9e061f3c1aa726e4ae36c46431664c9c26.exe
5148	57ffcfc243328da9cdf70df23f94bb9e061f3c1aa726e4ae36c46431664c9c26.exe
5148	57ffcfc243328da9cdf70df23f94bb9e061f3c1aa726e4ae36c46431664c9c26.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5148	57ffcfc243328da9cdf70df23f94bb9e061f3c1aa726e4ae36c46431664c9c26.exe
Token: SeDebugPrivilege	1648	9h3sk.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 5148 wrote to memory of 2228	5148	57ffcfc243328da9cdf70df23f94bb9e061f3c1aa726e4ae36c46431664c9c26.exe	81
PID 5148 wrote to memory of 4908	5148	57ffcfc243328da9cdf70df23f94bb9e061f3c1aa726e4ae36c46431664c9c26.exe	83
PID 2228 wrote to memory of 4264	2228	cmd.exe	85
PID 4908 wrote to memory of 3996	4908	cmd.exe	86
PID 4908 wrote to memory of 3088	4908	cmd.exe	89

C:\Users\Admin\AppData\Local\Temp\57ffcfc243328da9cdf70df23f94bb9e061f3c1aa726e4ae36c46431664c9c26.exe
"C:\Users\Admin\AppData\Local\Temp\57ffcfc243328da9cdf70df23f94bb9e061f3c1aa726e4ae36c46431664c9c26.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5148
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "9h3sk" /tr '"C:\Users\Admin\AppData\Roaming\9h3sk.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2228
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "9h3sk" /tr '"C:\Users\Admin\AppData\Roaming\9h3sk.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4264
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpF462.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4908
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:3996
- - C:\Users\Admin\AppData\Roaming\9h3sk.exe
    "C:\Users\Admin\AppData\Roaming\9h3sk.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3088

C:\Users\Admin\AppData\Roaming\9h3sk.exe
"C:\Users\Admin\AppData\Roaming\9h3sk.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:1648

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

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

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

tmpF462.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpF462.tmp.bat
Size 149B
SHA256 8cade20e48004ad22d8ffa70c05c9ea869b968de2edb865902a74b7e35601223
MD5 d81cb79b713f02f4b4de5989c8ba7926
SHA1 8bceaebd3384f40b22b2d850ff801a7e91865c94
SHA512 3fa51a89ff418964979e6efe1b4e9c17d32bf0933c4b3db8e70f310668ec52ea50723175c533f0d65fc1bdfca30b8cfbc9c6340d6ed019c39f07d61f2a0fb766
TLSH
T148C08C82A1C9EA1E3805681316FBE48CA26668593E44BB00C344441E12C0459F099241
MD5 SHA1 SHA512 TLSH

Submit Download

9h3sk.exe

Path C:\Users\Admin\AppData\Roaming\9h3sk.exe
Size 45KB
SHA256 57ffcfc243328da9cdf70df23f94bb9e061f3c1aa726e4ae36c46431664c9c26
MD5 53da3ee66913e62649877941bc75cd57
SHA1 11cde16276aa14e909a814c9022d442cf02ef2f8
SHA512 97543dae8b8f09140e981bd2436e8ea77bcc73dedafb9cc599e363875942823e431a538bf069157174f191ee3a159cea8109bb085a88623abde0a1bcfb190a44
SSDEEP 768:BuPi1TVF5l6NWUtb2Hmo2qIL3xY6yZoOPI5zjbIgj3iDbJ0THUBDZjx:BuPi1TV/l12LuPo353bfjSDDdjx
TLSH
T1CA232B003BE8822BF2BE4B78ADF261454A7AE2A37603D54E1CC452D75713FC65A426FD
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/5148-0-0x00000000009D0000-0x00000000009E2000-memory.dmp

Download

memory/5148-1-0x0000000005340000-0x0000000005350000-memory.dmp

Download

memory/5148-2-0x0000000005350000-0x00000000053EC000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

Replay Monitor

Loading Replay Monitor...

Downloads