asyncrat | e9837fc1d609e0084452590c09746a89af73ec6abf45a26ab58a4d48c9ebceac

Analysis

max time kernel
47s
max time network
153s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
02-08-2024 19:06

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General

Target

C1619D951B039CE9CB600815E8B14B26.exe
Size

1007KB
MD5

c1619d951b039ce9cb600815e8b14b26
SHA1

4def66d57b972beb3065a29ed1fe88610943d383
SHA256

e9837fc1d609e0084452590c09746a89af73ec6abf45a26ab58a4d48c9ebceac
SHA512

c1f071ab1cbe2e12576227a69618f2a717d49c6fa632280b2d769c53c1c8d89bfe51bd524f5aed13fb67d84109e4aa99ec05d96a589284f275135f036bdb2edc
SSDEEP

24576:heAy4u8ZernsYvWwUIGOh5rE1xrJK06WwkS9Ev95FZCyGWsfe:Iyern6VIVqxrJ5KyvVZCyGWsfe

Score

10^/10

asyncrat discovery persistence rat

Malware Config

Signatures

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
behavioral1/memory/5668-1053-0x0000000000480000-0x000000000049A000-memory.dmp	family_asyncrat

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Run\Kzaibmgvot = "C:\\Users\\Admin\\AppData\\Roaming\\Kzaibmgvot.exe"	C1619D951B039CE9CB600815E8B14B26.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 6 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	C1619D951B039CE9CB600815E8B14B26.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	aspnet_compiler.exe

Delays execution with timeout.exe 2 IoCs

evasion

pid	Process
2444	timeout.exe
2232	timeout.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3004	C1619D951B039CE9CB600815E8B14B26.exe
Token: SeDebugPrivilege	3004	C1619D951B039CE9CB600815E8B14B26.exe
Token: SeDebugPrivilege	5668	aspnet_compiler.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 3004 wrote to memory of 2212	3004	C1619D951B039CE9CB600815E8B14B26.exe	29
PID 3004 wrote to memory of 2212	3004	C1619D951B039CE9CB600815E8B14B26.exe	29
PID 3004 wrote to memory of 2212	3004	C1619D951B039CE9CB600815E8B14B26.exe	29
PID 3004 wrote to memory of 2212	3004	C1619D951B039CE9CB600815E8B14B26.exe	29
PID 2212 wrote to memory of 2444	2212	cmd.exe	31
PID 2212 wrote to memory of 2444	2212	cmd.exe	31
PID 2212 wrote to memory of 2444	2212	cmd.exe	31
PID 2212 wrote to memory of 2444	2212	cmd.exe	31
PID 3004 wrote to memory of 2096	3004	C1619D951B039CE9CB600815E8B14B26.exe	32
PID 3004 wrote to memory of 2096	3004	C1619D951B039CE9CB600815E8B14B26.exe	32
PID 3004 wrote to memory of 2096	3004	C1619D951B039CE9CB600815E8B14B26.exe	32
PID 3004 wrote to memory of 2096	3004	C1619D951B039CE9CB600815E8B14B26.exe	32
PID 2096 wrote to memory of 2232	2096	cmd.exe	34
PID 2096 wrote to memory of 2232	2096	cmd.exe	34
PID 2096 wrote to memory of 2232	2096	cmd.exe	34
PID 2096 wrote to memory of 2232	2096	cmd.exe	34
PID 3004 wrote to memory of 5668	3004	C1619D951B039CE9CB600815E8B14B26.exe	35
PID 3004 wrote to memory of 5668	3004	C1619D951B039CE9CB600815E8B14B26.exe	35
PID 3004 wrote to memory of 5668	3004	C1619D951B039CE9CB600815E8B14B26.exe	35
PID 3004 wrote to memory of 5668	3004	C1619D951B039CE9CB600815E8B14B26.exe	35
PID 3004 wrote to memory of 5668	3004	C1619D951B039CE9CB600815E8B14B26.exe	35

C:\Users\Admin\AppData\Local\Temp\C1619D951B039CE9CB600815E8B14B26.exe
"C:\Users\Admin\AppData\Local\Temp\C1619D951B039CE9CB600815E8B14B26.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3004
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout 5
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2212
- - C:\Windows\SysWOW64\timeout.exe
    timeout 5
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2444
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout 5
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2096
- - C:\Windows\SysWOW64\timeout.exe
    timeout 5
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2232
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:5668

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Cab4B35.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
memory/3004-0-0x0000000073E7E000-0x0000000073E7F000-memory.dmp

Filesize
4KB

Download
memory/3004-1-0x00000000009C0000-0x0000000000AC2000-memory.dmp

Filesize
1.0MB

Download
memory/3004-2-0x0000000073E70000-0x000000007455E000-memory.dmp

Filesize
6.9MB

Download
memory/3004-3-0x0000000073E70000-0x000000007455E000-memory.dmp

Filesize
6.9MB

Download
memory/3004-4-0x0000000005BC0000-0x0000000005CAE000-memory.dmp

Filesize
952KB

Download
memory/3004-5-0x0000000073E70000-0x000000007455E000-memory.dmp

Filesize
6.9MB

Download
memory/3004-9-0x0000000005BC0000-0x0000000005CA7000-memory.dmp

Filesize
924KB

Download
memory/3004-6-0x0000000005BC0000-0x0000000005CA7000-memory.dmp

Filesize
924KB

Download
memory/3004-31-0x0000000005BC0000-0x0000000005CA7000-memory.dmp

Filesize
924KB

Download
memory/3004-37-0x0000000005BC0000-0x0000000005CA7000-memory.dmp

Filesize
924KB

Download
memory/3004-35-0x0000000005BC0000-0x0000000005CA7000-memory.dmp

Filesize
924KB

Download
memory/3004-43-0x0000000005BC0000-0x0000000005CA7000-memory.dmp

Filesize
924KB

Download
memory/3004-41-0x0000000005BC0000-0x0000000005CA7000-memory.dmp

Filesize
924KB

Download
memory/3004-39-0x0000000005BC0000-0x0000000005CA7000-memory.dmp

Filesize
924KB

Download
memory/3004-49-0x0000000005BC0000-0x0000000005CA7000-memory.dmp

Filesize
924KB

Download
memory/3004-47-0x0000000005BC0000-0x0000000005CA7000-memory.dmp

Filesize
924KB

Download
memory/3004-45-0x0000000005BC0000-0x0000000005CA7000-memory.dmp

Filesize
924KB

Download
memory/3004-33-0x0000000005BC0000-0x0000000005CA7000-memory.dmp

Filesize
924KB

Download
memory/3004-27-0x0000000005BC0000-0x0000000005CA7000-memory.dmp

Filesize
924KB

Download
memory/3004-25-0x0000000005BC0000-0x0000000005CA7000-memory.dmp

Filesize
924KB

Download
memory/3004-23-0x0000000005BC0000-0x0000000005CA7000-memory.dmp

Filesize
924KB

Download
memory/3004-21-0x0000000005BC0000-0x0000000005CA7000-memory.dmp

Filesize
924KB

Download
memory/3004-19-0x0000000005BC0000-0x0000000005CA7000-memory.dmp

Filesize
924KB

Download
memory/3004-17-0x0000000005BC0000-0x0000000005CA7000-memory.dmp

Filesize
924KB

Download
memory/3004-15-0x0000000005BC0000-0x0000000005CA7000-memory.dmp

Filesize
924KB

Download
memory/3004-13-0x0000000005BC0000-0x0000000005CA7000-memory.dmp

Filesize
924KB

Download
memory/3004-11-0x0000000005BC0000-0x0000000005CA7000-memory.dmp

Filesize
924KB

Download
memory/3004-7-0x0000000005BC0000-0x0000000005CA7000-memory.dmp

Filesize
924KB

Download
memory/3004-29-0x0000000005BC0000-0x0000000005CA7000-memory.dmp

Filesize
924KB

Download
memory/3004-65-0x0000000005BC0000-0x0000000005CA7000-memory.dmp

Filesize
924KB

Download
memory/3004-69-0x0000000005BC0000-0x0000000005CA7000-memory.dmp

Filesize
924KB

Download
memory/3004-67-0x0000000005BC0000-0x0000000005CA7000-memory.dmp

Filesize
924KB

Download
memory/3004-63-0x0000000005BC0000-0x0000000005CA7000-memory.dmp

Filesize
924KB

Download
memory/3004-61-0x0000000005BC0000-0x0000000005CA7000-memory.dmp

Filesize
924KB

Download
memory/3004-58-0x0000000005BC0000-0x0000000005CA7000-memory.dmp

Filesize
924KB

Download
memory/3004-56-0x0000000005BC0000-0x0000000005CA7000-memory.dmp

Filesize
924KB

Download
memory/3004-54-0x0000000005BC0000-0x0000000005CA7000-memory.dmp

Filesize
924KB

Download
memory/3004-51-0x0000000005BC0000-0x0000000005CA7000-memory.dmp

Filesize
924KB

Download
memory/3004-59-0x0000000005BC0000-0x0000000005CA7000-memory.dmp

Filesize
924KB

Download
memory/3004-1042-0x0000000073E7E000-0x0000000073E7F000-memory.dmp

Filesize
4KB

Download
memory/3004-1043-0x0000000073E70000-0x000000007455E000-memory.dmp

Filesize
6.9MB

Download
memory/3004-1044-0x0000000004F80000-0x0000000004FEE000-memory.dmp

Filesize
440KB

Download
memory/3004-1045-0x0000000004D70000-0x0000000004DBC000-memory.dmp

Filesize
304KB

Download
memory/3004-1046-0x0000000073E70000-0x000000007455E000-memory.dmp

Filesize
6.9MB

Download
memory/3004-1047-0x0000000005710000-0x0000000005764000-memory.dmp

Filesize
336KB

Download
memory/3004-1051-0x0000000073E70000-0x000000007455E000-memory.dmp

Filesize
6.9MB

Download
memory/5668-1052-0x00000000000C0000-0x00000000000DB000-memory.dmp

Filesize
108KB

Download
memory/5668-1053-0x0000000000480000-0x000000000049A000-memory.dmp

Filesize
104KB

Download
memory/5668-1070-0x00000000006A0000-0x00000000006AA000-memory.dmp

Filesize
40KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads