asyncrat | 7e4f903b3491e6fd757e2963906acb0136ed28bb55158e37c6225a0fbada4122

General

Target

Sega1b.exe
Size

509KB
MD5

98706453f50546ee727ee5617505a485
SHA1

67fa7f0cfd503800028ea2a5b8f5e9898368febd
SHA256

7e4f903b3491e6fd757e2963906acb0136ed28bb55158e37c6225a0fbada4122
SHA512

3c065cc4c642209fd61c78d0c4bbbeed23a8db466b255e9fa7761901a4dcfef72496a40513ea12817eccfe221ad4c23ae39d0b7798ada6e5862b0bcae1b3fc72

Score

10^/10

asyncrat 3 persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

3

C2

217.64.149.93:1973

Mutex

df4Rtg34dFt5ynrew

Attributes

anti_vm
false
bsod
false
delay
3
install
false
install_folder
%AppData%
pastebin_config
null

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
rat asyncrat

Async RAT payload 5 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1792-65-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1792-66-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1792-68-0x000000000040C6BE-mapping.dmp	asyncrat
behavioral1/memory/1792-67-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1792-73-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat

Executes dropped EXE 1 IoCs

Processes:

RegAsm.exe

pid process

1792 RegAsm.exe
Loads dropped DLL 2 IoCs

Processes:

Sega1b.exeRegAsm.exe

pid process

1140 Sega1b.exe
1792 RegAsm.exe

pid	process
1792	RegAsm.exe

pid	process
1140	Sega1b.exe
1792	RegAsm.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

Sega1b.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Windows\CurrentVersion\Run\htj = "\"C:\\Users\\Admin\\AppData\\Roaming\\htj.exe\""	Sega1b.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Sega1b.exe

description pid process target process

PID 1140 set thread context of 1792 1140 Sega1b.exe RegAsm.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

Sega1b.exe

pid process

1140 Sega1b.exe
1140 Sega1b.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Sega1b.exeRegAsm.exe

description pid process

Token: SeDebugPrivilege 1140 Sega1b.exe
Token: SeDebugPrivilege 1792 RegAsm.exe

description	pid	process	target process
PID 1140 set thread context of 1792	1140	Sega1b.exe	RegAsm.exe

pid	process
1140	Sega1b.exe
1140	Sega1b.exe

description	pid	process
Token: SeDebugPrivilege	1140	Sega1b.exe
Token: SeDebugPrivilege	1792	RegAsm.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

Sega1b.exe

description	pid	process	target process
PID 1140 wrote to memory of 1792	1140	Sega1b.exe	RegAsm.exe
PID 1140 wrote to memory of 1792	1140	Sega1b.exe	RegAsm.exe
PID 1140 wrote to memory of 1792	1140	Sega1b.exe	RegAsm.exe
PID 1140 wrote to memory of 1792	1140	Sega1b.exe	RegAsm.exe
PID 1140 wrote to memory of 1792	1140	Sega1b.exe	RegAsm.exe
PID 1140 wrote to memory of 1792	1140	Sega1b.exe	RegAsm.exe
PID 1140 wrote to memory of 1792	1140	Sega1b.exe	RegAsm.exe
PID 1140 wrote to memory of 1792	1140	Sega1b.exe	RegAsm.exe
PID 1140 wrote to memory of 1792	1140	Sega1b.exe	RegAsm.exe
PID 1140 wrote to memory of 1792	1140	Sega1b.exe	RegAsm.exe
PID 1140 wrote to memory of 1792	1140	Sega1b.exe	RegAsm.exe
PID 1140 wrote to memory of 1792	1140	Sega1b.exe	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\Sega1b.exe
"C:\Users\Admin\AppData\Local\Temp\Sega1b.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1140

C:\Users\Admin\AppData\Local\Temp\RegAsm.exe
C:\Users\Admin\AppData\Local\Temp\RegAsm.exe
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
PID:1792

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\RegAsm.exe
MD5
b58b926c3574d28d5b7fdd2ca3ec30d5

SHA1
d260c4ffd603a9cfc057fcb83d678b1cecdf86f9

SHA256
6e70b56d748c4ccab13cc8a055d3795ea0dd95fe3b70568d7d3ac0c6621140a3

SHA512
b13cb998822b716b695013bcd6dec62a2290567d0d1743b2d982ca084235cf69c6ea1fc91c9d4e62657c6f9e102c7c60e81296ab055ffe43b887c5f8ec8958ab

Download Submit
C:\Users\Admin\AppData\Local\Temp\RegAsm.exe
MD5
b58b926c3574d28d5b7fdd2ca3ec30d5

SHA1
d260c4ffd603a9cfc057fcb83d678b1cecdf86f9

SHA256
6e70b56d748c4ccab13cc8a055d3795ea0dd95fe3b70568d7d3ac0c6621140a3

SHA512
b13cb998822b716b695013bcd6dec62a2290567d0d1743b2d982ca084235cf69c6ea1fc91c9d4e62657c6f9e102c7c60e81296ab055ffe43b887c5f8ec8958ab

Download Submit
\Users\Admin\AppData\Local\Temp\RegAsm.exe
MD5
b58b926c3574d28d5b7fdd2ca3ec30d5

SHA1
d260c4ffd603a9cfc057fcb83d678b1cecdf86f9

SHA256
6e70b56d748c4ccab13cc8a055d3795ea0dd95fe3b70568d7d3ac0c6621140a3

SHA512
b13cb998822b716b695013bcd6dec62a2290567d0d1743b2d982ca084235cf69c6ea1fc91c9d4e62657c6f9e102c7c60e81296ab055ffe43b887c5f8ec8958ab

Download Submit
\Users\Admin\AppData\Local\Temp\RegAsm.exe
MD5
b58b926c3574d28d5b7fdd2ca3ec30d5

SHA1
d260c4ffd603a9cfc057fcb83d678b1cecdf86f9

SHA256
6e70b56d748c4ccab13cc8a055d3795ea0dd95fe3b70568d7d3ac0c6621140a3

SHA512
b13cb998822b716b695013bcd6dec62a2290567d0d1743b2d982ca084235cf69c6ea1fc91c9d4e62657c6f9e102c7c60e81296ab055ffe43b887c5f8ec8958ab

Download Submit
memory/1140-57-0x0000000075191000-0x0000000075193000-memory.dmp

Filesize
8KB

Download
memory/1140-58-0x0000000004B00000-0x0000000004B01000-memory.dmp

Filesize
4KB

Download
memory/1140-59-0x00000000003C0000-0x00000000003C2000-memory.dmp

Filesize
8KB

Download
memory/1140-60-0x00000000007D0000-0x000000000083B000-memory.dmp

Filesize
428KB

Download
memory/1140-61-0x0000000000790000-0x00000000007A4000-memory.dmp

Filesize
80KB

Download
memory/1140-55-0x0000000000250000-0x0000000000251000-memory.dmp

Filesize
4KB

Download
memory/1792-64-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1792-68-0x000000000040C6BE-mapping.dmp

Download
memory/1792-67-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1792-66-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1792-65-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1792-63-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1792-73-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1792-75-0x0000000004F40000-0x0000000004F41000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads