asyncrat | a25384a50bece6cefbc853d787d65ab8688bca6d30da116fe16e6b1a3f6095eb

Analysis

max time kernel
149s
max time network
178s
platform
windows7_x64
resource
win7-20220414-en
submitted
21-05-2022 12:19

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General

Target

PO_45_13.scr
Size

479KB
MD5

50c3085963b5fdc5a9c00d10d1b4f960
SHA1

6529e11136560ad369d1b443a6e60f4e1f85c71e
SHA256

2c8c5c5e5990da4a2af218cfece6afda3f4830be6605b9767adbfbde2e5cd276
SHA512

36318d8dd2f4cd844fd8e1c47356d98c2af9df85646009b8d1cce97de834740f703a1770ed8770261c42cfe52eda5f52a43a7379f577754c1ea2ec723afbe837

Score

10^/10

asyncrat default agilenet persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

206.123.129.103:5456

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
false
install_file
windows.exe
install_folder
%AppData%

aes.plain

Signatures

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

Async RAT payload 11 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1480-54-0x00000000008D0000-0x000000000094E000-memory.dmp	asyncrat
\Users\Admin\Music\Googles.exe	asyncrat
C:\Users\Admin\Music\Googles.exe	asyncrat
C:\Users\Admin\Music\Googles.exe	asyncrat
behavioral1/memory/880-65-0x0000000001300000-0x000000000137E000-memory.dmp	asyncrat
behavioral1/memory/704-76-0x0000000000400000-0x0000000000428000-memory.dmp	asyncrat
behavioral1/memory/704-78-0x0000000000400000-0x0000000000428000-memory.dmp	asyncrat
behavioral1/memory/704-79-0x0000000000400000-0x0000000000428000-memory.dmp	asyncrat
behavioral1/memory/704-80-0x000000000040C72E-mapping.dmp	asyncrat
behavioral1/memory/704-83-0x0000000000400000-0x0000000000428000-memory.dmp	asyncrat
behavioral1/memory/704-85-0x0000000000400000-0x0000000000428000-memory.dmp	asyncrat

Executes dropped EXE 2 IoCs

Processes:

Googles.exeInstallUtil.exe

pid process

880 Googles.exe
704 InstallUtil.exe
Loads dropped DLL 4 IoCs

Processes:

PO_45_13.scrGoogles.exe

pid process

1480 PO_45_13.scr
1480 PO_45_13.scr
880 Googles.exe
880 Googles.exe

pid	process
880	Googles.exe
704	InstallUtil.exe

pid	process
1480	PO_45_13.scr
1480	PO_45_13.scr
880	Googles.exe
880	Googles.exe

Obfuscated with Agile.Net obfuscator 1 IoCs

Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

agilenet

Processes:

resource	yara_rule
behavioral1/memory/1480-56-0x0000000000380000-0x00000000003A2000-memory.dmp	agile_net

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

reg.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows\CurrentVersion\Run\Googles = "C:\\Windows\\system32\\pcalua.exe -a C:\\Users\\Admin\\Music\\Googles.exe"	reg.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Googles.exe

description pid process target process

PID 880 set thread context of 704 880 Googles.exe InstallUtil.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

PO_45_13.scrGoogles.exe

pid process

1480 PO_45_13.scr
1480 PO_45_13.scr
880 Googles.exe
880 Googles.exe
880 Googles.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

PO_45_13.scrGoogles.exe

description pid process

Token: SeDebugPrivilege 1480 PO_45_13.scr
Token: SeDebugPrivilege 880 Googles.exe

description	pid	process	target process
PID 880 set thread context of 704	880	Googles.exe	InstallUtil.exe

pid	process
1480	PO_45_13.scr
1480	PO_45_13.scr
880	Googles.exe
880	Googles.exe
880	Googles.exe

description	pid	process
Token: SeDebugPrivilege	1480	PO_45_13.scr
Token: SeDebugPrivilege	880	Googles.exe

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

PO_45_13.scrcmd.exeGoogles.exe

description	pid	process	target process
PID 1480 wrote to memory of 2028	1480	PO_45_13.scr	cmd.exe
PID 1480 wrote to memory of 2028	1480	PO_45_13.scr	cmd.exe
PID 1480 wrote to memory of 2028	1480	PO_45_13.scr	cmd.exe
PID 1480 wrote to memory of 2028	1480	PO_45_13.scr	cmd.exe
PID 2028 wrote to memory of 1844	2028	cmd.exe	reg.exe
PID 2028 wrote to memory of 1844	2028	cmd.exe	reg.exe
PID 2028 wrote to memory of 1844	2028	cmd.exe	reg.exe
PID 2028 wrote to memory of 1844	2028	cmd.exe	reg.exe
PID 1480 wrote to memory of 880	1480	PO_45_13.scr	Googles.exe
PID 1480 wrote to memory of 880	1480	PO_45_13.scr	Googles.exe
PID 1480 wrote to memory of 880	1480	PO_45_13.scr	Googles.exe
PID 1480 wrote to memory of 880	1480	PO_45_13.scr	Googles.exe
PID 880 wrote to memory of 704	880	Googles.exe	InstallUtil.exe
PID 880 wrote to memory of 704	880	Googles.exe	InstallUtil.exe
PID 880 wrote to memory of 704	880	Googles.exe	InstallUtil.exe
PID 880 wrote to memory of 704	880	Googles.exe	InstallUtil.exe
PID 880 wrote to memory of 704	880	Googles.exe	InstallUtil.exe
PID 880 wrote to memory of 704	880	Googles.exe	InstallUtil.exe
PID 880 wrote to memory of 704	880	Googles.exe	InstallUtil.exe
PID 880 wrote to memory of 704	880	Googles.exe	InstallUtil.exe
PID 880 wrote to memory of 704	880	Googles.exe	InstallUtil.exe
PID 880 wrote to memory of 704	880	Googles.exe	InstallUtil.exe
PID 880 wrote to memory of 704	880	Googles.exe	InstallUtil.exe
PID 880 wrote to memory of 704	880	Googles.exe	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\PO_45_13.scr
"C:\Users\Admin\AppData\Local\Temp\PO_45_13.scr" /S
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1480

C:\Windows\SysWOW64\cmd.exe
"cmd.exe" /c REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v Googles /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\Music\Googles.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:2028

C:\Windows\SysWOW64\reg.exe
REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v Googles /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\Music\Googles.exe"
3⤵
- Adds Run key to start application
PID:1844

C:\Users\Admin\Music\Googles.exe
"C:\Users\Admin\Music\Googles.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:880

C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
"C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
3⤵
- Executes dropped EXE
PID:704

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\305ca9ce-05a7-4081-bcf5-b3110c43e68e\l.dll
Filesize
94KB

MD5
14ff402962ad21b78ae0b4c43cd1f194

SHA1
f8a510eb26666e875a5bdd1cadad40602763ad72

SHA256
fb9646cb956945bdc503e69645f6b5316d3826b780d3c36738d6b944e884d15b

SHA512
daa7a08bf3709119a944bce28f6ebdd24e54a22b18cd9f86a87873e958df121a3881dcdd5e162f6b4e543238c7aef20f657c9830df01d4c79290f7c9a4fcc54b

Download Submit
C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
Filesize
40KB

MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
Filesize
40KB

MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
C:\Users\Admin\Music\Googles.exe
Filesize
479KB

MD5
50c3085963b5fdc5a9c00d10d1b4f960

SHA1
6529e11136560ad369d1b443a6e60f4e1f85c71e

SHA256
2c8c5c5e5990da4a2af218cfece6afda3f4830be6605b9767adbfbde2e5cd276

SHA512
36318d8dd2f4cd844fd8e1c47356d98c2af9df85646009b8d1cce97de834740f703a1770ed8770261c42cfe52eda5f52a43a7379f577754c1ea2ec723afbe837

Download Submit
C:\Users\Admin\Music\Googles.exe
Filesize
479KB

MD5
50c3085963b5fdc5a9c00d10d1b4f960

SHA1
6529e11136560ad369d1b443a6e60f4e1f85c71e

SHA256
2c8c5c5e5990da4a2af218cfece6afda3f4830be6605b9767adbfbde2e5cd276

SHA512
36318d8dd2f4cd844fd8e1c47356d98c2af9df85646009b8d1cce97de834740f703a1770ed8770261c42cfe52eda5f52a43a7379f577754c1ea2ec723afbe837

Download Submit
\Users\Admin\AppData\Local\Temp\305ca9ce-05a7-4081-bcf5-b3110c43e68e\l.dll
Filesize
94KB

MD5
14ff402962ad21b78ae0b4c43cd1f194

SHA1
f8a510eb26666e875a5bdd1cadad40602763ad72

SHA256
fb9646cb956945bdc503e69645f6b5316d3826b780d3c36738d6b944e884d15b

SHA512
daa7a08bf3709119a944bce28f6ebdd24e54a22b18cd9f86a87873e958df121a3881dcdd5e162f6b4e543238c7aef20f657c9830df01d4c79290f7c9a4fcc54b

Download Submit
\Users\Admin\AppData\Local\Temp\305ca9ce-05a7-4081-bcf5-b3110c43e68e\l.dll
Filesize
94KB

MD5
14ff402962ad21b78ae0b4c43cd1f194

SHA1
f8a510eb26666e875a5bdd1cadad40602763ad72

SHA256
fb9646cb956945bdc503e69645f6b5316d3826b780d3c36738d6b944e884d15b

SHA512
daa7a08bf3709119a944bce28f6ebdd24e54a22b18cd9f86a87873e958df121a3881dcdd5e162f6b4e543238c7aef20f657c9830df01d4c79290f7c9a4fcc54b

Download Submit
\Users\Admin\AppData\Local\Temp\InstallUtil.exe
Filesize
40KB

MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
\Users\Admin\Music\Googles.exe
Filesize
479KB

MD5
50c3085963b5fdc5a9c00d10d1b4f960

SHA1
6529e11136560ad369d1b443a6e60f4e1f85c71e

SHA256
2c8c5c5e5990da4a2af218cfece6afda3f4830be6605b9767adbfbde2e5cd276

SHA512
36318d8dd2f4cd844fd8e1c47356d98c2af9df85646009b8d1cce97de834740f703a1770ed8770261c42cfe52eda5f52a43a7379f577754c1ea2ec723afbe837

Download Submit
memory/704-73-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/704-74-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/704-85-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/704-83-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/704-80-0x000000000040C72E-mapping.dmp

Download
memory/704-79-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/704-78-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/704-76-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/880-69-0x0000000074690000-0x0000000074710000-memory.dmp

Filesize
512KB

Download
memory/880-70-0x0000000000410000-0x000000000041A000-memory.dmp

Filesize
40KB

Download
memory/880-62-0x0000000000000000-mapping.dmp

Download
memory/880-65-0x0000000001300000-0x000000000137E000-memory.dmp

Filesize
504KB

Download
memory/1480-54-0x00000000008D0000-0x000000000094E000-memory.dmp

Filesize
504KB

Download
memory/1480-56-0x0000000000380000-0x00000000003A2000-memory.dmp

Filesize
136KB

Download
memory/1480-58-0x0000000074690000-0x0000000074710000-memory.dmp

Filesize
512KB

Download
memory/1480-55-0x0000000074F91000-0x0000000074F93000-memory.dmp

Filesize
8KB

Download
memory/1844-60-0x0000000000000000-mapping.dmp

Download
memory/2028-59-0x0000000000000000-mapping.dmp

Download