asyncrat | 87346c61f33de8032a07485854ff530fc91d48770ab3f6c660c78f20575686b3

General

Target

87346c61f33de8032a07485854ff530fc91d48770ab3f6c660c78f20575686b3.exe
Size

46KB
MD5

6aeffcb0f2c4703a35309f019e001822
SHA1

2b3237ca7a252a96997263575fbb96e9d2f24320
SHA256

87346c61f33de8032a07485854ff530fc91d48770ab3f6c660c78f20575686b3
SHA512

87af7919630a99b17839f14d558e091985ecc3e67597cd8445e0ab1ae06bf3205d4e148958f6d298f41defbab9139f17868a580aecd6bd1b9061aae8d17d7d3d

Score

10^/10

asyncrat persistence rat

Malware Config

Signatures

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

Async RAT payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/1216-130-0x0000000000B90000-0x0000000000BA2000-memory.dmp	asyncrat
C:\Users\Admin\AppData\Local\Temp\Update.exe	asyncrat
C:\Users\Admin\AppData\Local\Temp\Update.exe	asyncrat

Executes dropped EXE 1 IoCs

Processes:

Update.exe

pid process

3636 Update.exe
Sets service image path in registry 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1060

Modify Registry
T1112

pid	process
3636	Update.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

87346c61f33de8032a07485854ff530fc91d48770ab3f6c660c78f20575686b3.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-790714498-1549421491-1643397139-1000\Control Panel\International\Geo\Nation	87346c61f33de8032a07485854ff530fc91d48770ab3f6c660c78f20575686b3.exe

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

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

544 schtasks.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

1540 timeout.exe

pid	process
544	schtasks.exe

pid	process
1540	timeout.exe

Modifies data under HKEY_USERS 41 IoCs

Processes:

WaaSMedicAgent.exe

description	ioc	process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	WaaSMedicAgent.exe

Suspicious behavior: EnumeratesProcesses 22 IoCs

Processes:

87346c61f33de8032a07485854ff530fc91d48770ab3f6c660c78f20575686b3.exeUpdate.exe

pid	process
1216	87346c61f33de8032a07485854ff530fc91d48770ab3f6c660c78f20575686b3.exe
1216	87346c61f33de8032a07485854ff530fc91d48770ab3f6c660c78f20575686b3.exe
1216	87346c61f33de8032a07485854ff530fc91d48770ab3f6c660c78f20575686b3.exe
1216	87346c61f33de8032a07485854ff530fc91d48770ab3f6c660c78f20575686b3.exe
1216	87346c61f33de8032a07485854ff530fc91d48770ab3f6c660c78f20575686b3.exe
1216	87346c61f33de8032a07485854ff530fc91d48770ab3f6c660c78f20575686b3.exe
1216	87346c61f33de8032a07485854ff530fc91d48770ab3f6c660c78f20575686b3.exe
1216	87346c61f33de8032a07485854ff530fc91d48770ab3f6c660c78f20575686b3.exe
1216	87346c61f33de8032a07485854ff530fc91d48770ab3f6c660c78f20575686b3.exe
1216	87346c61f33de8032a07485854ff530fc91d48770ab3f6c660c78f20575686b3.exe
1216	87346c61f33de8032a07485854ff530fc91d48770ab3f6c660c78f20575686b3.exe
1216	87346c61f33de8032a07485854ff530fc91d48770ab3f6c660c78f20575686b3.exe
1216	87346c61f33de8032a07485854ff530fc91d48770ab3f6c660c78f20575686b3.exe
1216	87346c61f33de8032a07485854ff530fc91d48770ab3f6c660c78f20575686b3.exe
1216	87346c61f33de8032a07485854ff530fc91d48770ab3f6c660c78f20575686b3.exe
1216	87346c61f33de8032a07485854ff530fc91d48770ab3f6c660c78f20575686b3.exe
1216	87346c61f33de8032a07485854ff530fc91d48770ab3f6c660c78f20575686b3.exe
1216	87346c61f33de8032a07485854ff530fc91d48770ab3f6c660c78f20575686b3.exe
1216	87346c61f33de8032a07485854ff530fc91d48770ab3f6c660c78f20575686b3.exe
1216	87346c61f33de8032a07485854ff530fc91d48770ab3f6c660c78f20575686b3.exe
1216	87346c61f33de8032a07485854ff530fc91d48770ab3f6c660c78f20575686b3.exe
3636	Update.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

87346c61f33de8032a07485854ff530fc91d48770ab3f6c660c78f20575686b3.exeUpdate.exe

description	pid	process
Token: SeDebugPrivilege	1216	87346c61f33de8032a07485854ff530fc91d48770ab3f6c660c78f20575686b3.exe
Token: SeDebugPrivilege	3636	Update.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

87346c61f33de8032a07485854ff530fc91d48770ab3f6c660c78f20575686b3.execmd.exe

description	pid	process	target process
PID 1216 wrote to memory of 544	1216	87346c61f33de8032a07485854ff530fc91d48770ab3f6c660c78f20575686b3.exe	schtasks.exe
PID 1216 wrote to memory of 544	1216	87346c61f33de8032a07485854ff530fc91d48770ab3f6c660c78f20575686b3.exe	schtasks.exe
PID 1216 wrote to memory of 2824	1216	87346c61f33de8032a07485854ff530fc91d48770ab3f6c660c78f20575686b3.exe	cmd.exe
PID 1216 wrote to memory of 2824	1216	87346c61f33de8032a07485854ff530fc91d48770ab3f6c660c78f20575686b3.exe	cmd.exe
PID 2824 wrote to memory of 1540	2824	cmd.exe	timeout.exe
PID 2824 wrote to memory of 1540	2824	cmd.exe	timeout.exe
PID 2824 wrote to memory of 3636	2824	cmd.exe	Update.exe
PID 2824 wrote to memory of 3636	2824	cmd.exe	Update.exe

C:\Users\Admin\AppData\Local\Temp\87346c61f33de8032a07485854ff530fc91d48770ab3f6c660c78f20575686b3.exe
"C:\Users\Admin\AppData\Local\Temp\87346c61f33de8032a07485854ff530fc91d48770ab3f6c660c78f20575686b3.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1216

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /f /sc ONLOGON /RL HIGHEST /tn "'Update"' /tr "'C:\Users\Admin\AppData\Local\Temp\Update.exe"'
2⤵
- Creates scheduled task(s)
PID:544

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp4917.tmp.bat""
2⤵
- Suspicious use of WriteProcessMemory
PID:2824

C:\Windows\system32\timeout.exe
timeout 3
3⤵
- Delays execution with timeout.exe
PID:1540

C:\Users\Admin\AppData\Local\Temp\Update.exe
"C:\Users\Admin\AppData\Local\Temp\Update.exe"
3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3636

C:\Windows\System32\WaaSMedicAgent.exe
C:\Windows\System32\WaaSMedicAgent.exe 999b14937e7a9d15c5ac465b0f47315f NZEgRxQceUqaoGTnPodVoA.0.1.0.0.0
1⤵
- Modifies data under HKEY_USERS
PID:1548

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

Scheduled Task

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\Update.exe
MD5
612168926dbed3bb84daa6606a9eff23

SHA1
d40e59f5b5b5e44b2ffaf9ecf8c47b2f3c9df235

SHA256
b60e1c63b5d21e5750c346fbe9a2eefd6afa4d4f77c316e65f6c00c0c63b0c52

SHA512
c3ddfc6fac52c51138185d44a1cfce6d8419ef2e1b881dfc721d8c6483f1551428ccd41320686cdb021b3f56bbb879ecfe443dd2e9a4c1f22282c132a4e556d1

Download Submit
C:\Users\Admin\AppData\Local\Temp\Update.exe
MD5
612168926dbed3bb84daa6606a9eff23

SHA1
d40e59f5b5b5e44b2ffaf9ecf8c47b2f3c9df235

SHA256
b60e1c63b5d21e5750c346fbe9a2eefd6afa4d4f77c316e65f6c00c0c63b0c52

SHA512
c3ddfc6fac52c51138185d44a1cfce6d8419ef2e1b881dfc721d8c6483f1551428ccd41320686cdb021b3f56bbb879ecfe443dd2e9a4c1f22282c132a4e556d1

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp4917.tmp.bat
MD5
6b0c3f8d9725bbd57adaf95092b438d0

SHA1
e49f8a1b6dc09ac378f95984aa93529fe90d79b7

SHA256
3b54f100aa17bfe26bf4cfa5a90a08dc1eeafc31aaf0c3dde50cd67d416381ef

SHA512
989505c39d6db60df9e5bf49586d0423a344c6cdbd62306fea07c2f5905c21cf6ce415143da5b5d793533a89fc66389f8b92a457300483629e02c101a1198e14

Download Submit
memory/1216-130-0x0000000000B90000-0x0000000000BA2000-memory.dmp

Filesize
72KB

Download
memory/1216-131-0x000000001D970000-0x000000001D972000-memory.dmp

Filesize
8KB

Download
memory/3636-239-0x0000000000700000-0x0000000000740000-memory.dmp

Filesize
256KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads