asyncrat | 8640c15126e8ec4503c9fa88ec3136baa36bfa37621e434674e117b83ee16ce1

Analysis

max time kernel
298s
max time network
298s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
31/01/2025, 01:45

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Report Analysis Logs

General

Target

PO690654W226614626001MLCWHKGH10051956.pdf.exe
Size

1.2MB
MD5

22d2fb041fb5c4424f5b34e7826e1aaf
SHA1

f4e4aed78f80fd50ff2a39633c78d705c1324257
SHA256

ef9eed5753290ece2e0b521d46667fdafe0d29581f91e3d9160b17153e73ebcf
SHA512

c5285d57239bcf1278677442d7273c5c14148d5e055ba5583a9fc4e9b190ffef7b56da05abcea3e04484a302b40c4a4eabfa64d73d44b3b3069d1d34c9f2534d
SSDEEP

24576:8YsZPpPEug3h24WBVTzzXetV28sjMELZtGOm1Punn0yfChQB1thox+xkAu:8YsBpP53iL2QwDGu0ismthw+xQ

Score

10^/10

asyncrat jan discovery persistence rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

JAN

Mutex

qnxsdyjsfdtxvg

Attributes

delay
1
install
false
install_folder
%AppData%
pastebin_config
https://pastebin.com/raw/Ax2bm8Nk

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat
Asyncrat family
asyncrat

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Local\\terralink.exe,"	reg.exe

Executes dropped EXE 1 IoCs

pid	Process
724	terralink.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 38 IoCs

Web Service

T1102

flow	ioc
45	pastebin.com
49	pastebin.com
51	pastebin.com
53	pastebin.com
57	pastebin.com
58	pastebin.com
55	pastebin.com
60	pastebin.com
71	pastebin.com
75	pastebin.com
80	pastebin.com
82	pastebin.com
48	pastebin.com
50	pastebin.com
61	pastebin.com
62	pastebin.com
65	pastebin.com
56	pastebin.com
59	pastebin.com
70	pastebin.com
73	pastebin.com
76	pastebin.com
63	pastebin.com
67	pastebin.com
77	pastebin.com
78	pastebin.com
44	pastebin.com
47	pastebin.com
54	pastebin.com
66	pastebin.com
69	pastebin.com
79	pastebin.com
52	pastebin.com
64	pastebin.com
68	pastebin.com
74	pastebin.com
81	pastebin.com
72	pastebin.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 724 set thread context of 2548	724	terralink.exe	100

System Location Discovery: System Language Discovery 1 TTPs 9 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	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PO690654W226614626001MLCWHKGH10051956.pdf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	terralink.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	InstallUtil.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 5 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
3360	cmd.exe
4616	PING.EXE
3784	cmd.exe
4388	PING.EXE
2012	PING.EXE

Runs ping.exe 1 TTPs 3 IoCs

Remote System Discovery

T1018

pid	Process
4616	PING.EXE
4388	PING.EXE
2012	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4440	PO690654W226614626001MLCWHKGH10051956.pdf.exe
4440	PO690654W226614626001MLCWHKGH10051956.pdf.exe
4440	PO690654W226614626001MLCWHKGH10051956.pdf.exe
4440	PO690654W226614626001MLCWHKGH10051956.pdf.exe
4440	PO690654W226614626001MLCWHKGH10051956.pdf.exe
4440	PO690654W226614626001MLCWHKGH10051956.pdf.exe
4440	PO690654W226614626001MLCWHKGH10051956.pdf.exe
4440	PO690654W226614626001MLCWHKGH10051956.pdf.exe
4440	PO690654W226614626001MLCWHKGH10051956.pdf.exe
4440	PO690654W226614626001MLCWHKGH10051956.pdf.exe
4440	PO690654W226614626001MLCWHKGH10051956.pdf.exe
4440	PO690654W226614626001MLCWHKGH10051956.pdf.exe
4440	PO690654W226614626001MLCWHKGH10051956.pdf.exe
4440	PO690654W226614626001MLCWHKGH10051956.pdf.exe
4440	PO690654W226614626001MLCWHKGH10051956.pdf.exe
4440	PO690654W226614626001MLCWHKGH10051956.pdf.exe
4440	PO690654W226614626001MLCWHKGH10051956.pdf.exe
4440	PO690654W226614626001MLCWHKGH10051956.pdf.exe
4440	PO690654W226614626001MLCWHKGH10051956.pdf.exe
4440	PO690654W226614626001MLCWHKGH10051956.pdf.exe
4440	PO690654W226614626001MLCWHKGH10051956.pdf.exe
4440	PO690654W226614626001MLCWHKGH10051956.pdf.exe
4440	PO690654W226614626001MLCWHKGH10051956.pdf.exe
4440	PO690654W226614626001MLCWHKGH10051956.pdf.exe
4440	PO690654W226614626001MLCWHKGH10051956.pdf.exe
4440	PO690654W226614626001MLCWHKGH10051956.pdf.exe
724	terralink.exe
724	terralink.exe
724	terralink.exe
2548	InstallUtil.exe
2548	InstallUtil.exe
2548	InstallUtil.exe
2548	InstallUtil.exe
2548	InstallUtil.exe
2548	InstallUtil.exe
2548	InstallUtil.exe
2548	InstallUtil.exe
2548	InstallUtil.exe
2548	InstallUtil.exe
2548	InstallUtil.exe
2548	InstallUtil.exe
2548	InstallUtil.exe
2548	InstallUtil.exe
2548	InstallUtil.exe
2548	InstallUtil.exe
2548	InstallUtil.exe
2548	InstallUtil.exe
2548	InstallUtil.exe
2548	InstallUtil.exe
2548	InstallUtil.exe
2548	InstallUtil.exe
2548	InstallUtil.exe
2548	InstallUtil.exe
2548	InstallUtil.exe
2548	InstallUtil.exe
2548	InstallUtil.exe
2548	InstallUtil.exe
2548	InstallUtil.exe
2548	InstallUtil.exe
2548	InstallUtil.exe
2548	InstallUtil.exe
2548	InstallUtil.exe
2548	InstallUtil.exe
2548	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4440	PO690654W226614626001MLCWHKGH10051956.pdf.exe
Token: SeDebugPrivilege	724	terralink.exe
Token: SeDebugPrivilege	2548	InstallUtil.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2548	InstallUtil.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 4440 wrote to memory of 3360	4440	PO690654W226614626001MLCWHKGH10051956.pdf.exe	82
PID 4440 wrote to memory of 3360	4440	PO690654W226614626001MLCWHKGH10051956.pdf.exe	82
PID 4440 wrote to memory of 3360	4440	PO690654W226614626001MLCWHKGH10051956.pdf.exe	82
PID 3360 wrote to memory of 4616	3360	cmd.exe	84
PID 3360 wrote to memory of 4616	3360	cmd.exe	84
PID 3360 wrote to memory of 4616	3360	cmd.exe	84
PID 4440 wrote to memory of 3784	4440	PO690654W226614626001MLCWHKGH10051956.pdf.exe	93
PID 4440 wrote to memory of 3784	4440	PO690654W226614626001MLCWHKGH10051956.pdf.exe	93
PID 4440 wrote to memory of 3784	4440	PO690654W226614626001MLCWHKGH10051956.pdf.exe	93
PID 3784 wrote to memory of 4388	3784	cmd.exe	96
PID 3784 wrote to memory of 4388	3784	cmd.exe	96
PID 3784 wrote to memory of 4388	3784	cmd.exe	96
PID 3360 wrote to memory of 1680	3360	cmd.exe	97
PID 3360 wrote to memory of 1680	3360	cmd.exe	97
PID 3360 wrote to memory of 1680	3360	cmd.exe	97
PID 3784 wrote to memory of 2012	3784	cmd.exe	98
PID 3784 wrote to memory of 2012	3784	cmd.exe	98
PID 3784 wrote to memory of 2012	3784	cmd.exe	98
PID 3784 wrote to memory of 724	3784	cmd.exe	99
PID 3784 wrote to memory of 724	3784	cmd.exe	99
PID 3784 wrote to memory of 724	3784	cmd.exe	99
PID 724 wrote to memory of 2548	724	terralink.exe	100
PID 724 wrote to memory of 2548	724	terralink.exe	100
PID 724 wrote to memory of 2548	724	terralink.exe	100
PID 724 wrote to memory of 2548	724	terralink.exe	100
PID 724 wrote to memory of 2548	724	terralink.exe	100
PID 724 wrote to memory of 2548	724	terralink.exe	100
PID 724 wrote to memory of 2548	724	terralink.exe	100
PID 724 wrote to memory of 2548	724	terralink.exe	100

C:\Users\Admin\AppData\Local\Temp\PO690654W226614626001MLCWHKGH10051956.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\PO690654W226614626001MLCWHKGH10051956.pdf.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4440
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c ping 127.0.0.1 -n 36 > nul && REG ADD "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /f /v "Shell" /t REG_SZ /d "explorer.exe,C:\Users\Admin\AppData\Local\terralink.exe,"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:3360
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 36
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:4616
- - C:\Windows\SysWOW64\reg.exe
    REG ADD "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /f /v "Shell" /t REG_SZ /d "explorer.exe,C:\Users\Admin\AppData\Local\terralink.exe,"
    3⤵
    - Modifies WinLogon for persistence
    - System Location Discovery: System Language Discovery
    PID:1680
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c ping 127.0.0.1 -n 42 > nul && copy "C:\Users\Admin\AppData\Local\Temp\PO690654W226614626001MLCWHKGH10051956.pdf.exe" "C:\Users\Admin\AppData\Local\terralink.exe" && ping 127.0.0.1 -n 42 > nul && "C:\Users\Admin\AppData\Local\terralink.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:3784
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 42
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:4388
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 42
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2012
- - C:\Users\Admin\AppData\Local\terralink.exe
    "C:\Users\Admin\AppData\Local\terralink.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:724
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:2548

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Remote System Discovery

T1018

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\terralink.exe

Filesize
1.2MB

MD5
22d2fb041fb5c4424f5b34e7826e1aaf

SHA1
f4e4aed78f80fd50ff2a39633c78d705c1324257

SHA256
ef9eed5753290ece2e0b521d46667fdafe0d29581f91e3d9160b17153e73ebcf

SHA512
c5285d57239bcf1278677442d7273c5c14148d5e055ba5583a9fc4e9b190ffef7b56da05abcea3e04484a302b40c4a4eabfa64d73d44b3b3069d1d34c9f2534d

Download Submit
memory/724-25-0x00000000752E0000-0x0000000075A90000-memory.dmp

Filesize
7.7MB

Download
memory/724-22-0x0000000007B00000-0x0000000007B06000-memory.dmp

Filesize
24KB

Download
memory/724-21-0x0000000007AE0000-0x0000000007AFA000-memory.dmp

Filesize
104KB

Download
memory/724-20-0x00000000752E0000-0x0000000075A90000-memory.dmp

Filesize
7.7MB

Download
memory/724-19-0x00000000752E0000-0x0000000075A90000-memory.dmp

Filesize
7.7MB

Download
memory/2548-23-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/4440-5-0x0000000075310000-0x0000000075AC0000-memory.dmp

Filesize
7.7MB

Download
memory/4440-8-0x0000000075310000-0x0000000075AC0000-memory.dmp

Filesize
7.7MB

Download
memory/4440-9-0x0000000075310000-0x0000000075AC0000-memory.dmp

Filesize
7.7MB

Download
memory/4440-10-0x000000007531E000-0x000000007531F000-memory.dmp

Filesize
4KB

Download
memory/4440-11-0x0000000075310000-0x0000000075AC0000-memory.dmp

Filesize
7.7MB

Download
memory/4440-13-0x0000000075310000-0x0000000075AC0000-memory.dmp

Filesize
7.7MB

Download
memory/4440-7-0x0000000006940000-0x0000000006982000-memory.dmp

Filesize
264KB

Download
memory/4440-6-0x00000000069E0000-0x0000000006A7C000-memory.dmp

Filesize
624KB

Download
memory/4440-0-0x000000007531E000-0x000000007531F000-memory.dmp

Filesize
4KB

Download
memory/4440-4-0x00000000052F0000-0x00000000052FA000-memory.dmp

Filesize
40KB

Download
memory/4440-3-0x0000000005370000-0x0000000005402000-memory.dmp

Filesize
584KB

Download
memory/4440-2-0x0000000005920000-0x0000000005EC4000-memory.dmp

Filesize
5.6MB

Download
memory/4440-1-0x0000000000800000-0x0000000000942000-memory.dmp

Filesize
1.3MB

Download