asyncrat | d23c0b61eb7303bb60f1aa75d179606505336bf5d685c4e336f9429ef1515875

General

Target
d23c0b61eb7303bb60f1aa75d179606505336bf5d685c4e336f9429ef1515875.exe
Size 45KB
Sample260601-rf2p6ae12s
SHA256 d23c0b61eb7303bb60f1aa75d179606505336bf5d685c4e336f9429ef1515875
MD5 248bbfa92bbd32b8e1758db2575722e4
SHA1 05bfaf70eed8688f14a99aebe338861d2c541908
SHA512 e06fdbee837fcbf7f0dc616da9b9bf662bf10624f2b0f4154d1af4a04a741ede1098895cdb44d4b018084057e07f1dbc613f9d0f4fa0fa8e8e13f1cf2409db08
SSDEEP 768:JuxJNT5UR5rWUX8N5mo2qAwpt0CCMhdjCvS8PIjtjbQgX3iI9cAxWwtDw0AozCiH:JuxJNT5OU2M/CChBjlbXXSI9jxWYDwJS
TLSH
T13D232A0037E98127F2BE4B785DF26245867BB2636603D94E1CC451DB5623FC69A02AFE
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

videocoroas.com:443
videocoroas.com:80
videocoroas.com:7797
videocoroas.com:8707
videocoroas.com:6620
www.videocoroas.com:443
www.videocoroas.com:80
www.videocoroas.com:7797
www.videocoroas.com:8707
www.videocoroas.com:6620
gh0st.videocoroas.com:443
gh0st.videocoroas.com:80
gh0st.videocoroas.com:7797
gh0st.videocoroas.com:8707
gh0st.videocoroas.com:6620
sasser.videocoroas.com:443
sasser.videocoroas.com:80
sasser.videocoroas.com:7797
sasser.videocoroas.com:8707
sasser.videocoroas.com:6620

Mutex

yuHD5SGwHXZU

Attributes

delay
0
install
true
install_file
jtea.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/0x001a00000002b4c9-8.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
3064	jtea.exe
3308	jtea.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	cmd.exe
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	jtea.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jtea.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d23c0b61eb7303bb60f1aa75d179606505336bf5d685c4e336f9429ef1515875.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
5004	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
4700	schtasks.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

pid	Process
3128	d23c0b61eb7303bb60f1aa75d179606505336bf5d685c4e336f9429ef1515875.exe
3128	d23c0b61eb7303bb60f1aa75d179606505336bf5d685c4e336f9429ef1515875.exe
3128	d23c0b61eb7303bb60f1aa75d179606505336bf5d685c4e336f9429ef1515875.exe
3128	d23c0b61eb7303bb60f1aa75d179606505336bf5d685c4e336f9429ef1515875.exe
3128	d23c0b61eb7303bb60f1aa75d179606505336bf5d685c4e336f9429ef1515875.exe
3128	d23c0b61eb7303bb60f1aa75d179606505336bf5d685c4e336f9429ef1515875.exe
3128	d23c0b61eb7303bb60f1aa75d179606505336bf5d685c4e336f9429ef1515875.exe
3128	d23c0b61eb7303bb60f1aa75d179606505336bf5d685c4e336f9429ef1515875.exe
3128	d23c0b61eb7303bb60f1aa75d179606505336bf5d685c4e336f9429ef1515875.exe
3128	d23c0b61eb7303bb60f1aa75d179606505336bf5d685c4e336f9429ef1515875.exe
3128	d23c0b61eb7303bb60f1aa75d179606505336bf5d685c4e336f9429ef1515875.exe
3128	d23c0b61eb7303bb60f1aa75d179606505336bf5d685c4e336f9429ef1515875.exe
3128	d23c0b61eb7303bb60f1aa75d179606505336bf5d685c4e336f9429ef1515875.exe
3128	d23c0b61eb7303bb60f1aa75d179606505336bf5d685c4e336f9429ef1515875.exe
3128	d23c0b61eb7303bb60f1aa75d179606505336bf5d685c4e336f9429ef1515875.exe
3128	d23c0b61eb7303bb60f1aa75d179606505336bf5d685c4e336f9429ef1515875.exe
3128	d23c0b61eb7303bb60f1aa75d179606505336bf5d685c4e336f9429ef1515875.exe
3128	d23c0b61eb7303bb60f1aa75d179606505336bf5d685c4e336f9429ef1515875.exe
3128	d23c0b61eb7303bb60f1aa75d179606505336bf5d685c4e336f9429ef1515875.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3128	d23c0b61eb7303bb60f1aa75d179606505336bf5d685c4e336f9429ef1515875.exe
Token: SeDebugPrivilege	3064	jtea.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 3128 wrote to memory of 1596	3128	d23c0b61eb7303bb60f1aa75d179606505336bf5d685c4e336f9429ef1515875.exe	80
PID 3128 wrote to memory of 3772	3128	d23c0b61eb7303bb60f1aa75d179606505336bf5d685c4e336f9429ef1515875.exe	82
PID 3772 wrote to memory of 5004	3772	cmd.exe	84
PID 1596 wrote to memory of 4700	1596	cmd.exe	85
PID 3772 wrote to memory of 3308	3772	cmd.exe	88

C:\Users\Admin\AppData\Local\Temp\d23c0b61eb7303bb60f1aa75d179606505336bf5d685c4e336f9429ef1515875.exe
"C:\Users\Admin\AppData\Local\Temp\d23c0b61eb7303bb60f1aa75d179606505336bf5d685c4e336f9429ef1515875.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3128
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "jtea" /tr '"C:\Users\Admin\AppData\Roaming\jtea.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1596
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "jtea" /tr '"C:\Users\Admin\AppData\Roaming\jtea.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4700
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp1364.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3772
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:5004
- - C:\Users\Admin\AppData\Roaming\jtea.exe
    "C:\Users\Admin\AppData\Roaming\jtea.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3308

C:\Users\Admin\AppData\Roaming\jtea.exe
"C:\Users\Admin\AppData\Roaming\jtea.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:3064

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

tmp1364.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp1364.tmp.bat
Size 148B
SHA256 ab0c95df25fcb1834d5989a2ac30f38fa513f173a1a23e2ed69a8905759b40d6
MD5 7f4ed4f571a7e0b2000563e06419c413
SHA1 c36af242ccf26be1b7376bc3e70ea9874930d65c
SHA512 52a8cdc6756ec7d94c44414457cc55b25d56a20f07e83f6f801be4576e0225e4df7e052bd9090062118eae667d70e1e28875840925edeb9087d9acddafd997fa
TLSH
T11BC08C5291CBAA4E6809141302BAD48CA1636C993E40AB008348808A1280589E099241
MD5 SHA1 SHA512 TLSH

Submit Download

jtea.exe

Path C:\Users\Admin\AppData\Roaming\jtea.exe
Size 45KB
SHA256 d23c0b61eb7303bb60f1aa75d179606505336bf5d685c4e336f9429ef1515875
MD5 248bbfa92bbd32b8e1758db2575722e4
SHA1 05bfaf70eed8688f14a99aebe338861d2c541908
SHA512 e06fdbee837fcbf7f0dc616da9b9bf662bf10624f2b0f4154d1af4a04a741ede1098895cdb44d4b018084057e07f1dbc613f9d0f4fa0fa8e8e13f1cf2409db08
SSDEEP 768:JuxJNT5UR5rWUX8N5mo2qAwpt0CCMhdjCvS8PIjtjbQgX3iI9cAxWwtDw0AozCiH:JuxJNT5OU2M/CChBjlbXXSI9jxWYDwJS
TLSH
T13D232A0037E98127F2BE4B785DF26245867BB2636603D94E1CC451DB5623FC69A02AFE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3128-0-0x0000000000FA0000-0x0000000000FB2000-memory.dmp

Download

memory/3128-1-0x0000000005AC0000-0x0000000005AD0000-memory.dmp

Download

memory/3128-2-0x0000000005AD0000-0x0000000005B6C000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

Replay Monitor

Loading Replay Monitor...

Downloads