asyncrat | 1942f352c53508b8764d224976e930dbb35fb496a627f9506b0a5e998c1a8b7d

General

Target
1942f352c53508b8764d224976e930dbb35fb496a627f9506b0a5e998c1a8b7d.exe
Size 45KB
Sample260601-vpjsgsa161
SHA256 1942f352c53508b8764d224976e930dbb35fb496a627f9506b0a5e998c1a8b7d
MD5 2640923ba701c42d06d74c4af176c235
SHA1 c48af3a34684b01922fdb60ae57ef8e025c691ae
SHA512 58f9af028a73ba9b7d0da13b5b55b2d8fa5b2e7b5ee14add81bf5ed481f2b4d3624eb12a29bd973d937762876f0be7d3684964be052f19173f23890e05b1f12a
SSDEEP 768:4uLoZTUAoOSWUYZL8mo2qFDl9xcPEaPPIUFjbSgX3i2gZhCfW4zpMx0TFBDZbx:4uLoZTUTn2m1aEaIUNbVXS9axA0TLdbx
TLSH
T1A7231A003BD8822BF1BE4F7899F26145867EF2676603D58A1CC412DB5713FC69A426FE
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

bigshowpregnant.com:443
bigshowpregnant.com:80
bigshowpregnant.com:7797
bigshowpregnant.com:8707
bigshowpregnant.com:6620
www.bigshowpregnant.com:443
www.bigshowpregnant.com:80
www.bigshowpregnant.com:7797
www.bigshowpregnant.com:8707
www.bigshowpregnant.com:6620
remote.bigshowpregnant.com:443
remote.bigshowpregnant.com:80
remote.bigshowpregnant.com:7797
remote.bigshowpregnant.com:8707
remote.bigshowpregnant.com:6620
qakbot.bigshowpregnant.com:443
qakbot.bigshowpregnant.com:80
qakbot.bigshowpregnant.com:7797
qakbot.bigshowpregnant.com:8707
qakbot.bigshowpregnant.com:6620

Mutex

TyKzmw1gT8LI

Attributes

delay
0
install
true
install_file
fapmd.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/0x001c00000002b455-8.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
4044	fapmd.exe
4948	fapmd.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	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fapmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fapmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1942f352c53508b8764d224976e930dbb35fb496a627f9506b0a5e998c1a8b7d.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	schtasks.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
3540	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
1080	schtasks.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

pid	Process
4388	1942f352c53508b8764d224976e930dbb35fb496a627f9506b0a5e998c1a8b7d.exe
4388	1942f352c53508b8764d224976e930dbb35fb496a627f9506b0a5e998c1a8b7d.exe
4388	1942f352c53508b8764d224976e930dbb35fb496a627f9506b0a5e998c1a8b7d.exe
4388	1942f352c53508b8764d224976e930dbb35fb496a627f9506b0a5e998c1a8b7d.exe
4388	1942f352c53508b8764d224976e930dbb35fb496a627f9506b0a5e998c1a8b7d.exe
4388	1942f352c53508b8764d224976e930dbb35fb496a627f9506b0a5e998c1a8b7d.exe
4388	1942f352c53508b8764d224976e930dbb35fb496a627f9506b0a5e998c1a8b7d.exe
4388	1942f352c53508b8764d224976e930dbb35fb496a627f9506b0a5e998c1a8b7d.exe
4388	1942f352c53508b8764d224976e930dbb35fb496a627f9506b0a5e998c1a8b7d.exe
4388	1942f352c53508b8764d224976e930dbb35fb496a627f9506b0a5e998c1a8b7d.exe
4388	1942f352c53508b8764d224976e930dbb35fb496a627f9506b0a5e998c1a8b7d.exe
4388	1942f352c53508b8764d224976e930dbb35fb496a627f9506b0a5e998c1a8b7d.exe
4388	1942f352c53508b8764d224976e930dbb35fb496a627f9506b0a5e998c1a8b7d.exe
4388	1942f352c53508b8764d224976e930dbb35fb496a627f9506b0a5e998c1a8b7d.exe
4388	1942f352c53508b8764d224976e930dbb35fb496a627f9506b0a5e998c1a8b7d.exe
4388	1942f352c53508b8764d224976e930dbb35fb496a627f9506b0a5e998c1a8b7d.exe
4388	1942f352c53508b8764d224976e930dbb35fb496a627f9506b0a5e998c1a8b7d.exe
4388	1942f352c53508b8764d224976e930dbb35fb496a627f9506b0a5e998c1a8b7d.exe
4388	1942f352c53508b8764d224976e930dbb35fb496a627f9506b0a5e998c1a8b7d.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4388	1942f352c53508b8764d224976e930dbb35fb496a627f9506b0a5e998c1a8b7d.exe
Token: SeDebugPrivilege	4044	fapmd.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4388 wrote to memory of 3484	4388	1942f352c53508b8764d224976e930dbb35fb496a627f9506b0a5e998c1a8b7d.exe	82
PID 4388 wrote to memory of 3432	4388	1942f352c53508b8764d224976e930dbb35fb496a627f9506b0a5e998c1a8b7d.exe	84
PID 3484 wrote to memory of 1080	3484	cmd.exe	86
PID 3432 wrote to memory of 3540	3432	cmd.exe	87
PID 3432 wrote to memory of 4948	3432	cmd.exe	90

C:\Users\Admin\AppData\Local\Temp\1942f352c53508b8764d224976e930dbb35fb496a627f9506b0a5e998c1a8b7d.exe
"C:\Users\Admin\AppData\Local\Temp\1942f352c53508b8764d224976e930dbb35fb496a627f9506b0a5e998c1a8b7d.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4388
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "fapmd" /tr '"C:\Users\Admin\AppData\Roaming\fapmd.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3484
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "fapmd" /tr '"C:\Users\Admin\AppData\Roaming\fapmd.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1080
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp9BF.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3432
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:3540
- - C:\Users\Admin\AppData\Roaming\fapmd.exe
    "C:\Users\Admin\AppData\Roaming\fapmd.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4948

C:\Users\Admin\AppData\Roaming\fapmd.exe
"C:\Users\Admin\AppData\Roaming\fapmd.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:4044

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

tmp9BF.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp9BF.tmp.bat
Size 148B
SHA256 37710e9bc0d81f3d481c926fae2803ff72b1a0efdccc0dd9760cb75b0e7882bb
MD5 200a063c7a750c94f103ac7a0e2a27a0
SHA1 e6d301fc3d45d0d241eee99f10a69e97e3a407d2
SHA512 ef3f38f340daafb815c4d8b321413c04187d88a4828e3d94eda2ecebe7a9ec09b4fd53b707bb27ec88bf6d0dbc0888f50ad08024666fa110a5fff1c83daa73aa
TLSH
T100C02B4351C5FA1E280D187302FAD48DA2726C193F40BF20C704400D1A80448F4DA345
MD5 SHA1 SHA512 TLSH

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fapmd.exe

Path C:\Users\Admin\AppData\Roaming\fapmd.exe
Size 45KB
SHA256 1942f352c53508b8764d224976e930dbb35fb496a627f9506b0a5e998c1a8b7d
MD5 2640923ba701c42d06d74c4af176c235
SHA1 c48af3a34684b01922fdb60ae57ef8e025c691ae
SHA512 58f9af028a73ba9b7d0da13b5b55b2d8fa5b2e7b5ee14add81bf5ed481f2b4d3624eb12a29bd973d937762876f0be7d3684964be052f19173f23890e05b1f12a
SSDEEP 768:4uLoZTUAoOSWUYZL8mo2qFDl9xcPEaPPIUFjbSgX3i2gZhCfW4zpMx0TFBDZbx:4uLoZTUTn2m1aEaIUNbVXS9axA0TLdbx
TLSH
T1A7231A003BD8822BF1BE4F7899F26145867EF2676603D58A1CC412DB5713FC69A426FE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/4388-0-0x0000000000D50000-0x0000000000D62000-memory.dmp

Download

memory/4388-1-0x00000000058C0000-0x00000000058D0000-memory.dmp

Download

memory/4388-2-0x00000000057D0000-0x000000000586C000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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