asyncrat | fb037edda6db14f4cc45540ee0719c8ca02cbc7636f48c14b6dca3bd187f3e44

General

Target

New Purchase Order SSRNSSIQ102-2023.exe
Size

787KB
MD5

0e6861c721b9342f69eba894703f6484
SHA1

6c9b0712a4c249805f2f2f1760cd72cf917aa7c6
SHA256

fb037edda6db14f4cc45540ee0719c8ca02cbc7636f48c14b6dca3bd187f3e44
SHA512

6beb131306e2ae3b91d62f3630271b6755957f2046870ae4b62313851e98b4a2837053ea86d06da3f91d6b9b8ab81eb7e8bf7ccc26b1cb3cbe6cdf9e7db0dbe8
SSDEEP

6144:de/RS6Ugha13DnnTawr+BpIW85aDIamyJ95xuuEHQiljH6gnGJZ1ZnImK:deZB1hXwr+h85pMbxuuEHNe6IZBK

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

fresh03.ddns.net:45265

fresh03.ddns.net:34110

fresh03.ddns.net:2245

fresh01.ddns.net:45265

fresh01.ddns.net:34110

fresh01.ddns.net:2245

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
true
install_file
logs.exe
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 1 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/3936-144-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat

Checks computer location settings 2 TTPs 3 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

New Purchase Order SSRNSSIQ102-2023.exeNew Purchase Order SSRNSSIQ102-2023.exelogs.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Control Panel\International\Geo\Nation	New Purchase Order SSRNSSIQ102-2023.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Control Panel\International\Geo\Nation	New Purchase Order SSRNSSIQ102-2023.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Control Panel\International\Geo\Nation	logs.exe

Executes dropped EXE 2 IoCs

Processes:

logs.exelogs.exe

pid process

4356 logs.exe
3012 logs.exe

pid	process
4356	logs.exe
3012	logs.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

New Purchase Order SSRNSSIQ102-2023.exelogs.exe

description	pid	process	target process
PID 264 set thread context of 3936	264	New Purchase Order SSRNSSIQ102-2023.exe	New Purchase Order SSRNSSIQ102-2023.exe
PID 4356 set thread context of 3012	4356	logs.exe	logs.exe

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

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 3 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exeschtasks.exeschtasks.exe

pid process

2900 schtasks.exe
3280 schtasks.exe
2092 schtasks.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

4672 timeout.exe

pid	process
2900	schtasks.exe
3280	schtasks.exe
2092	schtasks.exe

pid	process
4672	timeout.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

Processes:

New Purchase Order SSRNSSIQ102-2023.exeNew Purchase Order SSRNSSIQ102-2023.exelogs.exe

pid	process
264	New Purchase Order SSRNSSIQ102-2023.exe
3936	New Purchase Order SSRNSSIQ102-2023.exe
3936	New Purchase Order SSRNSSIQ102-2023.exe
3936	New Purchase Order SSRNSSIQ102-2023.exe
3936	New Purchase Order SSRNSSIQ102-2023.exe
3936	New Purchase Order SSRNSSIQ102-2023.exe
3936	New Purchase Order SSRNSSIQ102-2023.exe
3936	New Purchase Order SSRNSSIQ102-2023.exe
3936	New Purchase Order SSRNSSIQ102-2023.exe
3936	New Purchase Order SSRNSSIQ102-2023.exe
3936	New Purchase Order SSRNSSIQ102-2023.exe
3936	New Purchase Order SSRNSSIQ102-2023.exe
3936	New Purchase Order SSRNSSIQ102-2023.exe
3936	New Purchase Order SSRNSSIQ102-2023.exe
3936	New Purchase Order SSRNSSIQ102-2023.exe
3936	New Purchase Order SSRNSSIQ102-2023.exe
3936	New Purchase Order SSRNSSIQ102-2023.exe
3936	New Purchase Order SSRNSSIQ102-2023.exe
3936	New Purchase Order SSRNSSIQ102-2023.exe
3936	New Purchase Order SSRNSSIQ102-2023.exe
3936	New Purchase Order SSRNSSIQ102-2023.exe
3936	New Purchase Order SSRNSSIQ102-2023.exe
3936	New Purchase Order SSRNSSIQ102-2023.exe
3936	New Purchase Order SSRNSSIQ102-2023.exe
4356	logs.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

New Purchase Order SSRNSSIQ102-2023.exeNew Purchase Order SSRNSSIQ102-2023.exelogs.exelogs.exe

description	pid	process
Token: SeDebugPrivilege	264	New Purchase Order SSRNSSIQ102-2023.exe
Token: SeDebugPrivilege	3936	New Purchase Order SSRNSSIQ102-2023.exe
Token: SeDebugPrivilege	4356	logs.exe
Token: SeDebugPrivilege	3012	logs.exe

Suspicious use of WriteProcessMemory 37 IoCs

Processes:

New Purchase Order SSRNSSIQ102-2023.exeNew Purchase Order SSRNSSIQ102-2023.execmd.execmd.exelogs.exe

description	pid	process	target process
PID 264 wrote to memory of 2900	264	New Purchase Order SSRNSSIQ102-2023.exe	schtasks.exe
PID 264 wrote to memory of 2900	264	New Purchase Order SSRNSSIQ102-2023.exe	schtasks.exe
PID 264 wrote to memory of 2900	264	New Purchase Order SSRNSSIQ102-2023.exe	schtasks.exe
PID 264 wrote to memory of 3936	264	New Purchase Order SSRNSSIQ102-2023.exe	New Purchase Order SSRNSSIQ102-2023.exe
PID 264 wrote to memory of 3936	264	New Purchase Order SSRNSSIQ102-2023.exe	New Purchase Order SSRNSSIQ102-2023.exe
PID 264 wrote to memory of 3936	264	New Purchase Order SSRNSSIQ102-2023.exe	New Purchase Order SSRNSSIQ102-2023.exe
PID 264 wrote to memory of 3936	264	New Purchase Order SSRNSSIQ102-2023.exe	New Purchase Order SSRNSSIQ102-2023.exe
PID 264 wrote to memory of 3936	264	New Purchase Order SSRNSSIQ102-2023.exe	New Purchase Order SSRNSSIQ102-2023.exe
PID 264 wrote to memory of 3936	264	New Purchase Order SSRNSSIQ102-2023.exe	New Purchase Order SSRNSSIQ102-2023.exe
PID 264 wrote to memory of 3936	264	New Purchase Order SSRNSSIQ102-2023.exe	New Purchase Order SSRNSSIQ102-2023.exe
PID 264 wrote to memory of 3936	264	New Purchase Order SSRNSSIQ102-2023.exe	New Purchase Order SSRNSSIQ102-2023.exe
PID 3936 wrote to memory of 4164	3936	New Purchase Order SSRNSSIQ102-2023.exe	cmd.exe
PID 3936 wrote to memory of 4164	3936	New Purchase Order SSRNSSIQ102-2023.exe	cmd.exe
PID 3936 wrote to memory of 4164	3936	New Purchase Order SSRNSSIQ102-2023.exe	cmd.exe
PID 3936 wrote to memory of 3296	3936	New Purchase Order SSRNSSIQ102-2023.exe	cmd.exe
PID 3936 wrote to memory of 3296	3936	New Purchase Order SSRNSSIQ102-2023.exe	cmd.exe
PID 3936 wrote to memory of 3296	3936	New Purchase Order SSRNSSIQ102-2023.exe	cmd.exe
PID 4164 wrote to memory of 3280	4164	cmd.exe	schtasks.exe
PID 4164 wrote to memory of 3280	4164	cmd.exe	schtasks.exe
PID 4164 wrote to memory of 3280	4164	cmd.exe	schtasks.exe
PID 3296 wrote to memory of 4672	3296	cmd.exe	timeout.exe
PID 3296 wrote to memory of 4672	3296	cmd.exe	timeout.exe
PID 3296 wrote to memory of 4672	3296	cmd.exe	timeout.exe
PID 3296 wrote to memory of 4356	3296	cmd.exe	logs.exe
PID 3296 wrote to memory of 4356	3296	cmd.exe	logs.exe
PID 3296 wrote to memory of 4356	3296	cmd.exe	logs.exe
PID 4356 wrote to memory of 2092	4356	logs.exe	schtasks.exe
PID 4356 wrote to memory of 2092	4356	logs.exe	schtasks.exe
PID 4356 wrote to memory of 2092	4356	logs.exe	schtasks.exe
PID 4356 wrote to memory of 3012	4356	logs.exe	logs.exe
PID 4356 wrote to memory of 3012	4356	logs.exe	logs.exe
PID 4356 wrote to memory of 3012	4356	logs.exe	logs.exe
PID 4356 wrote to memory of 3012	4356	logs.exe	logs.exe
PID 4356 wrote to memory of 3012	4356	logs.exe	logs.exe
PID 4356 wrote to memory of 3012	4356	logs.exe	logs.exe
PID 4356 wrote to memory of 3012	4356	logs.exe	logs.exe
PID 4356 wrote to memory of 3012	4356	logs.exe	logs.exe

C:\Users\Admin\AppData\Local\Temp\New Purchase Order SSRNSSIQ102-2023.exe
"C:\Users\Admin\AppData\Local\Temp\New Purchase Order SSRNSSIQ102-2023.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:264

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ziFpddctAZBdQ" /XML "C:\Users\Admin\AppData\Local\Temp\tmpAD95.tmp"
2⤵
- Creates scheduled task(s)
PID:2900

C:\Users\Admin\AppData\Local\Temp\New Purchase Order SSRNSSIQ102-2023.exe
"{path}"
2⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3936

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "logs" /tr '"C:\Users\Admin\AppData\Roaming\logs.exe"' & exit
3⤵
- Suspicious use of WriteProcessMemory
PID:4164

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "logs" /tr '"C:\Users\Admin\AppData\Roaming\logs.exe"'
4⤵
- Creates scheduled task(s)
PID:3280

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpC98A.tmp.bat""
3⤵
- Suspicious use of WriteProcessMemory
PID:3296

C:\Windows\SysWOW64\timeout.exe
timeout 3
4⤵
- Delays execution with timeout.exe
PID:4672

C:\Users\Admin\AppData\Roaming\logs.exe
"C:\Users\Admin\AppData\Roaming\logs.exe"
4⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4356

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ziFpddctAZBdQ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp79BF.tmp"
5⤵
- Creates scheduled task(s)
PID:2092

C:\Users\Admin\AppData\Roaming\logs.exe
"{path}"
5⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3012

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\New Purchase Order SSRNSSIQ102-2023.exe.log
Filesize
1KB

MD5
17573558c4e714f606f997e5157afaac

SHA1
13e16e9415ceef429aaf124139671ebeca09ed23

SHA256
c18db6aecad2436da4a63ff26af4e3a337cca48f01c21b8db494fe5ccc60e553

SHA512
f4edf13f05a0d142e4dd42802098c8c44988ee8869621a62c2b565a77c9a95857f636583ff8d6d9baa366603d98b9bfbf1fc75bc6f9f8f83c80cb1215b2941cc

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp79BF.tmp
Filesize
1KB

MD5
de078d073c4ac051385bb326943337a9

SHA1
e779dc9a3b09613d4b87d6b2d6e771a35d8f243d

SHA256
eabeb35837c8a540b452adbf021e27dca5eb07e960708af679863279a3f66398

SHA512
2673e56a84265942bac03940c9c641c8514e90e4aad8971f9f7cd0a72e64b3861c52261ac045434c6db1f8079479dc990c969d188026f90507289e5c670dfd77

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpAD95.tmp
Filesize
1KB

MD5
de078d073c4ac051385bb326943337a9

SHA1
e779dc9a3b09613d4b87d6b2d6e771a35d8f243d

SHA256
eabeb35837c8a540b452adbf021e27dca5eb07e960708af679863279a3f66398

SHA512
2673e56a84265942bac03940c9c641c8514e90e4aad8971f9f7cd0a72e64b3861c52261ac045434c6db1f8079479dc990c969d188026f90507289e5c670dfd77

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpC98A.tmp.bat
Filesize
148B

MD5
39bb57ef87e4e9ad0b3e272c91d69cbc

SHA1
cc3496bb43da906e8f2b946994ab4f6e5af2aa26

SHA256
cab0003d87c607cdb0103a926446994d2c3cd866425cc772eed9aad82ba220a2

SHA512
b786f5ad2378f4e8dd9b35d4db114e0ccc0dc0f0d88839542e720c675f61f1e6bfc10480e4f7f9852475d178cd0bef48a9f8225fa3d43aba55286f599ecb7468

Download Submit
C:\Users\Admin\AppData\Roaming\logs.exe
Filesize
787KB

MD5
0e6861c721b9342f69eba894703f6484

SHA1
6c9b0712a4c249805f2f2f1760cd72cf917aa7c6

SHA256
fb037edda6db14f4cc45540ee0719c8ca02cbc7636f48c14b6dca3bd187f3e44

SHA512
6beb131306e2ae3b91d62f3630271b6755957f2046870ae4b62313851e98b4a2837053ea86d06da3f91d6b9b8ab81eb7e8bf7ccc26b1cb3cbe6cdf9e7db0dbe8

Download Submit
C:\Users\Admin\AppData\Roaming\logs.exe
Filesize
787KB

MD5
0e6861c721b9342f69eba894703f6484

SHA1
6c9b0712a4c249805f2f2f1760cd72cf917aa7c6

SHA256
fb037edda6db14f4cc45540ee0719c8ca02cbc7636f48c14b6dca3bd187f3e44

SHA512
6beb131306e2ae3b91d62f3630271b6755957f2046870ae4b62313851e98b4a2837053ea86d06da3f91d6b9b8ab81eb7e8bf7ccc26b1cb3cbe6cdf9e7db0dbe8

Download Submit
C:\Users\Admin\AppData\Roaming\logs.exe
Filesize
787KB

MD5
0e6861c721b9342f69eba894703f6484

SHA1
6c9b0712a4c249805f2f2f1760cd72cf917aa7c6

SHA256
fb037edda6db14f4cc45540ee0719c8ca02cbc7636f48c14b6dca3bd187f3e44

SHA512
6beb131306e2ae3b91d62f3630271b6755957f2046870ae4b62313851e98b4a2837053ea86d06da3f91d6b9b8ab81eb7e8bf7ccc26b1cb3cbe6cdf9e7db0dbe8

Download Submit
memory/264-138-0x0000000005A10000-0x0000000005A66000-memory.dmp

Filesize
344KB

Download
memory/264-135-0x0000000005E80000-0x0000000006424000-memory.dmp

Filesize
5.6MB

Download
memory/264-134-0x0000000005830000-0x00000000058CC000-memory.dmp

Filesize
624KB

Download
memory/264-139-0x0000000005AF0000-0x0000000005B00000-memory.dmp

Filesize
64KB

Download
memory/264-140-0x0000000005AF0000-0x0000000005B00000-memory.dmp

Filesize
64KB

Download
memory/264-133-0x0000000000DE0000-0x0000000000EAC000-memory.dmp

Filesize
816KB

Download
memory/264-137-0x0000000005900000-0x000000000590A000-memory.dmp

Filesize
40KB

Download
memory/264-136-0x0000000005970000-0x0000000005A02000-memory.dmp

Filesize
584KB

Download
memory/3012-162-0x0000000005810000-0x0000000005820000-memory.dmp

Filesize
64KB

Download
memory/3012-163-0x0000000005C10000-0x0000000005C76000-memory.dmp

Filesize
408KB

Download
memory/3012-164-0x0000000005810000-0x0000000005820000-memory.dmp

Filesize
64KB

Download
memory/3936-147-0x0000000005500000-0x0000000005510000-memory.dmp

Filesize
64KB

Download
memory/3936-144-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/4356-155-0x0000000005330000-0x0000000005340000-memory.dmp

Filesize
64KB

Download
memory/4356-156-0x0000000005330000-0x0000000005340000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads