asyncrat | 43025e59e99e5a2258e5bc456a1eff02854aa1f44711f5f3aac5493b41bdc234

General

Target
43025e59e99e5a2258e5bc456a1eff02854aa1f44711f5f3aac5493b41bdc234.exe
Size 45KB
Sample260531-ph3dcsax8l
SHA256 43025e59e99e5a2258e5bc456a1eff02854aa1f44711f5f3aac5493b41bdc234
MD5 73ac10ea45b420f3495f196177c5a64e
SHA1 80bcb73465a2e360f716fcc425d871b97ed09d6d
SHA512 b0f5626bdbd0d8149834c9a8261721ed101da0fbafe780803e512ef2f923f1675af8b2e9de10e1c36f958cbebe1a8b19dcea91a845a834d8760cddb68ce8bc43
SSDEEP 768:4uBqJTMUyYUWUWBDimo2qVC0e3NEARViZPIrzjbJgQ3iRyEtjEM+NEx+EXaF2mB/:4uBqJTMpv213e+iWr3bGQSRyERN+EKFn
TLSH
T173231B003BE9812BF2BE5F7898F25241867AF6732603D5491CC451DB5B23BC69A43AFD
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

mixcloud.com:443
mixcloud.com:80
mixcloud.com:7797
mixcloud.com:8707
mixcloud.com:6620
www.mixcloud.com:443
www.mixcloud.com:80
www.mixcloud.com:7797
www.mixcloud.com:8707
www.mixcloud.com:6620
blaster.mixcloud.com:443
blaster.mixcloud.com:80
blaster.mixcloud.com:7797
blaster.mixcloud.com:8707
blaster.mixcloud.com:6620
zbot.mixcloud.com:443
zbot.mixcloud.com:80
zbot.mixcloud.com:7797
zbot.mixcloud.com:8707
zbot.mixcloud.com:6620
shamoon.mixcloud.com:443
shamoon.mixcloud.com:80
shamoon.mixcloud.com:7797
shamoon.mixcloud.com:8707
shamoon.mixcloud.com:6620
trickbot.mixcloud.com:443
trickbot.mixcloud.com:80
trickbot.mixcloud.com:7797
trickbot.mixcloud.com:8707
trickbot.mixcloud.com:6620

Mutex

mfGcE92jkKH4

Attributes

delay
0
install
true
install_file
052j.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/0x001e00000002b3f9-8.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
712	052j.exe
4904	052j.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	43025e59e99e5a2258e5bc456a1eff02854aa1f44711f5f3aac5493b41bdc234.exe
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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	052j.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	052j.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
2264	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
2964	schtasks.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

pid	Process
5024	43025e59e99e5a2258e5bc456a1eff02854aa1f44711f5f3aac5493b41bdc234.exe
5024	43025e59e99e5a2258e5bc456a1eff02854aa1f44711f5f3aac5493b41bdc234.exe
5024	43025e59e99e5a2258e5bc456a1eff02854aa1f44711f5f3aac5493b41bdc234.exe
5024	43025e59e99e5a2258e5bc456a1eff02854aa1f44711f5f3aac5493b41bdc234.exe
5024	43025e59e99e5a2258e5bc456a1eff02854aa1f44711f5f3aac5493b41bdc234.exe
5024	43025e59e99e5a2258e5bc456a1eff02854aa1f44711f5f3aac5493b41bdc234.exe
5024	43025e59e99e5a2258e5bc456a1eff02854aa1f44711f5f3aac5493b41bdc234.exe
5024	43025e59e99e5a2258e5bc456a1eff02854aa1f44711f5f3aac5493b41bdc234.exe
5024	43025e59e99e5a2258e5bc456a1eff02854aa1f44711f5f3aac5493b41bdc234.exe
5024	43025e59e99e5a2258e5bc456a1eff02854aa1f44711f5f3aac5493b41bdc234.exe
5024	43025e59e99e5a2258e5bc456a1eff02854aa1f44711f5f3aac5493b41bdc234.exe
5024	43025e59e99e5a2258e5bc456a1eff02854aa1f44711f5f3aac5493b41bdc234.exe
5024	43025e59e99e5a2258e5bc456a1eff02854aa1f44711f5f3aac5493b41bdc234.exe
5024	43025e59e99e5a2258e5bc456a1eff02854aa1f44711f5f3aac5493b41bdc234.exe
5024	43025e59e99e5a2258e5bc456a1eff02854aa1f44711f5f3aac5493b41bdc234.exe
5024	43025e59e99e5a2258e5bc456a1eff02854aa1f44711f5f3aac5493b41bdc234.exe
5024	43025e59e99e5a2258e5bc456a1eff02854aa1f44711f5f3aac5493b41bdc234.exe
5024	43025e59e99e5a2258e5bc456a1eff02854aa1f44711f5f3aac5493b41bdc234.exe
5024	43025e59e99e5a2258e5bc456a1eff02854aa1f44711f5f3aac5493b41bdc234.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5024	43025e59e99e5a2258e5bc456a1eff02854aa1f44711f5f3aac5493b41bdc234.exe
Token: SeDebugPrivilege	712	052j.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 5024 wrote to memory of 4640	5024	43025e59e99e5a2258e5bc456a1eff02854aa1f44711f5f3aac5493b41bdc234.exe	80
PID 5024 wrote to memory of 3296	5024	43025e59e99e5a2258e5bc456a1eff02854aa1f44711f5f3aac5493b41bdc234.exe	82
PID 4640 wrote to memory of 2964	4640	cmd.exe	84
PID 3296 wrote to memory of 2264	3296	cmd.exe	85
PID 3296 wrote to memory of 4904	3296	cmd.exe	88

C:\Users\Admin\AppData\Local\Temp\43025e59e99e5a2258e5bc456a1eff02854aa1f44711f5f3aac5493b41bdc234.exe
"C:\Users\Admin\AppData\Local\Temp\43025e59e99e5a2258e5bc456a1eff02854aa1f44711f5f3aac5493b41bdc234.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5024
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "052j" /tr '"C:\Users\Admin\AppData\Roaming\052j.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4640
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "052j" /tr '"C:\Users\Admin\AppData\Roaming\052j.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2964
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp9B60.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3296
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2264
- - C:\Users\Admin\AppData\Roaming\052j.exe
    "C:\Users\Admin\AppData\Roaming\052j.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4904

C:\Users\Admin\AppData\Roaming\052j.exe
"C:\Users\Admin\AppData\Roaming\052j.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:712

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

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Downloads

tmp9B60.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp9B60.tmp.bat
Size 148B
SHA256 70f387c439f1f8c55416899fd051b4bb9c1f353661ac738bfa524e8ac88acf2d
MD5 a3cc4aaabbd70ed045dabb8b8110ef60
SHA1 95258858ecfdd4bc180025f5b64e26200a862915
SHA512 4d3acb5a625fa1f0f1ba451e0b9a3aa3e8a61d8e5fa0e48381e7b0ae9ae06ad9544677ead4fd1387a6b03c7905bbf0b76bcfafafb062a3243be44a839e789abd
TLSH
T161C02B4252C5FA4E3805181712FFD5CEB172AC193F40FB10C304804D6380849F5E9341
MD5 SHA1 SHA512 TLSH

Submit Download

052j.exe

Path C:\Users\Admin\AppData\Roaming\052j.exe
Size 45KB
SHA256 43025e59e99e5a2258e5bc456a1eff02854aa1f44711f5f3aac5493b41bdc234
MD5 73ac10ea45b420f3495f196177c5a64e
SHA1 80bcb73465a2e360f716fcc425d871b97ed09d6d
SHA512 b0f5626bdbd0d8149834c9a8261721ed101da0fbafe780803e512ef2f923f1675af8b2e9de10e1c36f958cbebe1a8b19dcea91a845a834d8760cddb68ce8bc43
SSDEEP 768:4uBqJTMUyYUWUWBDimo2qVC0e3NEARViZPIrzjbJgQ3iRyEtjEM+NEx+EXaF2mB/:4uBqJTMpv213e+iWr3bGQSRyERN+EKFn
TLSH
T173231B003BE9812BF2BE5F7898F25241867AF6732603D5491CC451DB5B23BC69A43AFD
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/5024-0-0x0000000000660000-0x0000000000672000-memory.dmp

Download

memory/5024-1-0x0000000005230000-0x0000000005240000-memory.dmp

Download

memory/5024-2-0x0000000005120000-0x00000000051BC000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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