asyncrat | 0741281320f8c5b6fe34468d71a6c31722d622fce835f6e0c97c0fce04ef8d4a

General

Target

0741281320f8c5b6fe34468d71a6c31722d622fce835f6e0c97c0fce04ef8d4a.exe
Size

1.8MB
MD5

614c5b7da79949abd7faf7a31210a8cd
SHA1

81e4d1c36a4fd47b305382a239ee9583fcbf3d95
SHA256

0741281320f8c5b6fe34468d71a6c31722d622fce835f6e0c97c0fce04ef8d4a
SHA512

f58f466e4cbd761446688a1f93575c902a05adbcbae385afefbaa5f9eb12503a2c2d8a5b98f5c2b09b10b0c07818b1aa8266a0723912a62b2f8c89b9cced9e6f
SSDEEP

49152:Pi39+084E6W4W8Vm/ht49aXZmMA8D/dPU6vG:C+HVb4W8QD49unDpPU6O

Score

10^/10

asyncrat default persistence rat

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

1.err.line.pm:4449

Mutex

glzznzesxsoyn

Attributes

delay
1
install
false
install_folder
%AppData%

aes.plain

Signatures

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

Async RAT payload 2 IoCs

rat

resource	yara_rule
behavioral1/memory/2692-27-0x00000000002C0000-0x00000000002D8000-memory.dmp	family_asyncrat
behavioral1/memory/2692-32-0x0000000004DD0000-0x0000000004E10000-memory.dmp	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
1708	sg.tmp
2692	svchost.exe

Loads dropped DLL 4 IoCs

pid	Process
2380	0741281320f8c5b6fe34468d71a6c31722d622fce835f6e0c97c0fce04ef8d4a.exe
2380	0741281320f8c5b6fe34468d71a6c31722d622fce835f6e0c97c0fce04ef8d4a.exe
2380	0741281320f8c5b6fe34468d71a6c31722d622fce835f6e0c97c0fce04ef8d4a.exe
2692	svchost.exe

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-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows\CurrentVersion\Run\MyDLLStartup = "C:\\Program Files (x86)\\demo\\svchost.exe"	svchost.exe

Drops file in Program Files directory 6 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\demo\Office.txt	sg.tmp
File opened for modification	C:\Program Files (x86)\demo\Office.txt	sg.tmp
File created	C:\Program Files (x86)\demo\msedge_elf.dll	sg.tmp
File opened for modification	C:\Program Files (x86)\demo\msedge_elf.dll	sg.tmp
File created	C:\Program Files (x86)\demo\svchost.exe	sg.tmp
File opened for modification	C:\Program Files (x86)\demo\svchost.exe	sg.tmp

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2692	svchost.exe
2692	svchost.exe
2692	svchost.exe
2692	svchost.exe
2692	svchost.exe
2692	svchost.exe
2692	svchost.exe
2692	svchost.exe

Suspicious use of AdjustPrivilegeToken 16 IoCs

description	pid	Process
Token: SeBackupPrivilege	2380	0741281320f8c5b6fe34468d71a6c31722d622fce835f6e0c97c0fce04ef8d4a.exe
Token: SeRestorePrivilege	2380	0741281320f8c5b6fe34468d71a6c31722d622fce835f6e0c97c0fce04ef8d4a.exe
Token: 33	2380	0741281320f8c5b6fe34468d71a6c31722d622fce835f6e0c97c0fce04ef8d4a.exe
Token: SeIncBasePriorityPrivilege	2380	0741281320f8c5b6fe34468d71a6c31722d622fce835f6e0c97c0fce04ef8d4a.exe
Token: SeCreateGlobalPrivilege	2380	0741281320f8c5b6fe34468d71a6c31722d622fce835f6e0c97c0fce04ef8d4a.exe
Token: 33	2380	0741281320f8c5b6fe34468d71a6c31722d622fce835f6e0c97c0fce04ef8d4a.exe
Token: SeIncBasePriorityPrivilege	2380	0741281320f8c5b6fe34468d71a6c31722d622fce835f6e0c97c0fce04ef8d4a.exe
Token: 33	2380	0741281320f8c5b6fe34468d71a6c31722d622fce835f6e0c97c0fce04ef8d4a.exe
Token: SeIncBasePriorityPrivilege	2380	0741281320f8c5b6fe34468d71a6c31722d622fce835f6e0c97c0fce04ef8d4a.exe
Token: SeRestorePrivilege	1708	sg.tmp
Token: 35	1708	sg.tmp
Token: SeSecurityPrivilege	1708	sg.tmp
Token: SeSecurityPrivilege	1708	sg.tmp
Token: 33	2380	0741281320f8c5b6fe34468d71a6c31722d622fce835f6e0c97c0fce04ef8d4a.exe
Token: SeIncBasePriorityPrivilege	2380	0741281320f8c5b6fe34468d71a6c31722d622fce835f6e0c97c0fce04ef8d4a.exe
Token: SeDebugPrivilege	2692	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2692	svchost.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2380 wrote to memory of 2324	2380	0741281320f8c5b6fe34468d71a6c31722d622fce835f6e0c97c0fce04ef8d4a.exe	28
PID 2380 wrote to memory of 2324	2380	0741281320f8c5b6fe34468d71a6c31722d622fce835f6e0c97c0fce04ef8d4a.exe	28
PID 2380 wrote to memory of 2324	2380	0741281320f8c5b6fe34468d71a6c31722d622fce835f6e0c97c0fce04ef8d4a.exe	28
PID 2380 wrote to memory of 2324	2380	0741281320f8c5b6fe34468d71a6c31722d622fce835f6e0c97c0fce04ef8d4a.exe	28
PID 2380 wrote to memory of 1708	2380	0741281320f8c5b6fe34468d71a6c31722d622fce835f6e0c97c0fce04ef8d4a.exe	30
PID 2380 wrote to memory of 1708	2380	0741281320f8c5b6fe34468d71a6c31722d622fce835f6e0c97c0fce04ef8d4a.exe	30
PID 2380 wrote to memory of 1708	2380	0741281320f8c5b6fe34468d71a6c31722d622fce835f6e0c97c0fce04ef8d4a.exe	30
PID 2380 wrote to memory of 1708	2380	0741281320f8c5b6fe34468d71a6c31722d622fce835f6e0c97c0fce04ef8d4a.exe	30
PID 2380 wrote to memory of 2692	2380	0741281320f8c5b6fe34468d71a6c31722d622fce835f6e0c97c0fce04ef8d4a.exe	32
PID 2380 wrote to memory of 2692	2380	0741281320f8c5b6fe34468d71a6c31722d622fce835f6e0c97c0fce04ef8d4a.exe	32
PID 2380 wrote to memory of 2692	2380	0741281320f8c5b6fe34468d71a6c31722d622fce835f6e0c97c0fce04ef8d4a.exe	32
PID 2380 wrote to memory of 2692	2380	0741281320f8c5b6fe34468d71a6c31722d622fce835f6e0c97c0fce04ef8d4a.exe	32

C:\Users\Admin\AppData\Local\Temp\0741281320f8c5b6fe34468d71a6c31722d622fce835f6e0c97c0fce04ef8d4a.exe
"C:\Users\Admin\AppData\Local\Temp\0741281320f8c5b6fe34468d71a6c31722d622fce835f6e0c97c0fce04ef8d4a.exe"
1⤵
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2380
- C:\Windows\system32\cmd.exe
  cmd.exe /c set
  2⤵
  PID:2324
- C:\Users\Admin\AppData\Local\Temp\~7184430681295637428~\sg.tmp
  7zG_exe x "C:\Users\Admin\AppData\Local\Temp\0741281320f8c5b6fe34468d71a6c31722d622fce835f6e0c97c0fce04ef8d4a.exe" -y -aoa -o"C:\Program Files (x86)\demo"
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  - Suspicious use of AdjustPrivilegeToken
  PID:1708
- C:\Program Files (x86)\demo\svchost.exe
  "C:\Program Files (x86)\demo\svchost.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2692

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\demo\Office.txt

Filesize
111KB

MD5
52a1fc2e368b7367f762959a594fd94e

SHA1
3718fcd1679443258d472b0ef8b18b2ac00ff916

SHA256
52bea881a027370e60282ec9af9e4dde33ba723ca1b6236019e32c87deeb438e

SHA512
50944c91beeedecbd48ddab847332cd20a804197cd3afdeab1b9f340224be11df770d7a82b5ded1790d945f23c24c0abc21b74585586af274b73ba4f2dc01378

Download Submit
C:\Program Files (x86)\demo\msedge_elf.dll

Filesize
25KB

MD5
1a3aa41d55722984100122bed0a8696a

SHA1
f241a7c829970aeacf983eef1e1727181b042706

SHA256
4f1070e8e8d9660973a8f8b7f36464574b5f16c3ed58fce046282c31bb6be689

SHA512
8974ebe5834458abc48ab5c31ca4bfb404fc87fefa360728e3306c0fc110aa0d70e5fae6910229b74f715bc8a102f811b0aea8aa97d2529030bfd5db13ed93fc

Download Submit
\Program Files (x86)\demo\svchost.exe

Filesize
833KB

MD5
9a25c9f4ae1ae0206d0ac670fc26bfb0

SHA1
ab9e4e3c92a722d0ccec78a5843d99b29d5a65e5

SHA256
7e78f5183d1539b90445356a7069b0f610d9b8c69c2be228e5952fe807d1791b

SHA512
ed7c65b387f8a3aeb06a3e06ed6444a928bdaff816391220a633dbbc18b6d8db65e86889ed1ba9e48d8e88dbb3cae4867a7c3a1ff12f473f36f03639a5b711d1

Download Submit
\Users\Admin\AppData\Local\Temp\~7184430681295637428~\sg.tmp

Filesize
715KB

MD5
7c4718943bd3f66ebdb47ccca72c7b1e

SHA1
f9edfaa7adb8fa528b2e61b2b251f18da10a6969

SHA256
4cc32d00338fc7b206a7c052297acf9ac304ae7de9d61a2475a116959c1524fc

SHA512
e18c40d646fa4948f90f7471da55489df431f255041ebb6dcef86346f91078c9b27894e27216a4b2fe2a1c5e501c7953c77893cf696930123d28a322d49e1516

Download Submit
memory/2380-0-0x0000000000400000-0x000000000055F000-memory.dmp

Filesize
1.4MB

Download
memory/2692-25-0x0000000073CF0000-0x00000000743DE000-memory.dmp

Filesize
6.9MB

Download
memory/2692-24-0x0000000000080000-0x000000000009C000-memory.dmp

Filesize
112KB

Download
memory/2692-26-0x0000000004DD0000-0x0000000004E10000-memory.dmp

Filesize
256KB

Download
memory/2692-27-0x00000000002C0000-0x00000000002D8000-memory.dmp

Filesize
96KB

Download
memory/2692-28-0x0000000004DD0000-0x0000000004E10000-memory.dmp

Filesize
256KB

Download
memory/2692-30-0x00000000774A0000-0x00000000774A1000-memory.dmp

Filesize
4KB

Download
memory/2692-31-0x0000000073CF0000-0x00000000743DE000-memory.dmp

Filesize
6.9MB

Download
memory/2692-32-0x0000000004DD0000-0x0000000004E10000-memory.dmp

Filesize
256KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads