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 6 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1468-65-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1468-66-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1468-68-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1468-70-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1468-72-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1468-73-0x0000000000760000-0x00000000007A0000-memory.dmp	asyncrat

Executes dropped EXE 1 IoCs

Processes:

logs.exe

pid process

1400 logs.exe
Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid process

1696 cmd.exe

pid	process
1400	logs.exe

pid	process
1696	cmd.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

New Purchase Order SSRNSSIQ102-2023.exe

description	pid	process	target process
PID 1160 set thread context of 1468	1160	New Purchase Order SSRNSSIQ102-2023.exe	New Purchase Order SSRNSSIQ102-2023.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 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exeschtasks.exe

pid process

1976 schtasks.exe
1860 schtasks.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

1432 timeout.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

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

pid process

1160 New Purchase Order SSRNSSIQ102-2023.exe
1468 New Purchase Order SSRNSSIQ102-2023.exe

pid	process
1976	schtasks.exe
1860	schtasks.exe

pid	process
1432	timeout.exe

pid	process
1160	New Purchase Order SSRNSSIQ102-2023.exe
1468	New Purchase Order SSRNSSIQ102-2023.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

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

description	pid	process
Token: SeDebugPrivilege	1160	New Purchase Order SSRNSSIQ102-2023.exe
Token: SeDebugPrivilege	1468	New Purchase Order SSRNSSIQ102-2023.exe

Suspicious use of WriteProcessMemory 33 IoCs

Processes:

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

description	pid	process	target process
PID 1160 wrote to memory of 1976	1160	New Purchase Order SSRNSSIQ102-2023.exe	schtasks.exe
PID 1160 wrote to memory of 1976	1160	New Purchase Order SSRNSSIQ102-2023.exe	schtasks.exe
PID 1160 wrote to memory of 1976	1160	New Purchase Order SSRNSSIQ102-2023.exe	schtasks.exe
PID 1160 wrote to memory of 1976	1160	New Purchase Order SSRNSSIQ102-2023.exe	schtasks.exe
PID 1160 wrote to memory of 1468	1160	New Purchase Order SSRNSSIQ102-2023.exe	New Purchase Order SSRNSSIQ102-2023.exe
PID 1160 wrote to memory of 1468	1160	New Purchase Order SSRNSSIQ102-2023.exe	New Purchase Order SSRNSSIQ102-2023.exe
PID 1160 wrote to memory of 1468	1160	New Purchase Order SSRNSSIQ102-2023.exe	New Purchase Order SSRNSSIQ102-2023.exe
PID 1160 wrote to memory of 1468	1160	New Purchase Order SSRNSSIQ102-2023.exe	New Purchase Order SSRNSSIQ102-2023.exe
PID 1160 wrote to memory of 1468	1160	New Purchase Order SSRNSSIQ102-2023.exe	New Purchase Order SSRNSSIQ102-2023.exe
PID 1160 wrote to memory of 1468	1160	New Purchase Order SSRNSSIQ102-2023.exe	New Purchase Order SSRNSSIQ102-2023.exe
PID 1160 wrote to memory of 1468	1160	New Purchase Order SSRNSSIQ102-2023.exe	New Purchase Order SSRNSSIQ102-2023.exe
PID 1160 wrote to memory of 1468	1160	New Purchase Order SSRNSSIQ102-2023.exe	New Purchase Order SSRNSSIQ102-2023.exe
PID 1160 wrote to memory of 1468	1160	New Purchase Order SSRNSSIQ102-2023.exe	New Purchase Order SSRNSSIQ102-2023.exe
PID 1468 wrote to memory of 876	1468	New Purchase Order SSRNSSIQ102-2023.exe	cmd.exe
PID 1468 wrote to memory of 876	1468	New Purchase Order SSRNSSIQ102-2023.exe	cmd.exe
PID 1468 wrote to memory of 876	1468	New Purchase Order SSRNSSIQ102-2023.exe	cmd.exe
PID 1468 wrote to memory of 876	1468	New Purchase Order SSRNSSIQ102-2023.exe	cmd.exe
PID 1468 wrote to memory of 1696	1468	New Purchase Order SSRNSSIQ102-2023.exe	cmd.exe
PID 1468 wrote to memory of 1696	1468	New Purchase Order SSRNSSIQ102-2023.exe	cmd.exe
PID 1468 wrote to memory of 1696	1468	New Purchase Order SSRNSSIQ102-2023.exe	cmd.exe
PID 1468 wrote to memory of 1696	1468	New Purchase Order SSRNSSIQ102-2023.exe	cmd.exe
PID 1696 wrote to memory of 1432	1696	cmd.exe	timeout.exe
PID 1696 wrote to memory of 1432	1696	cmd.exe	timeout.exe
PID 1696 wrote to memory of 1432	1696	cmd.exe	timeout.exe
PID 1696 wrote to memory of 1432	1696	cmd.exe	timeout.exe
PID 876 wrote to memory of 1860	876	cmd.exe	schtasks.exe
PID 876 wrote to memory of 1860	876	cmd.exe	schtasks.exe
PID 876 wrote to memory of 1860	876	cmd.exe	schtasks.exe
PID 876 wrote to memory of 1860	876	cmd.exe	schtasks.exe
PID 1696 wrote to memory of 1400	1696	cmd.exe	logs.exe
PID 1696 wrote to memory of 1400	1696	cmd.exe	logs.exe
PID 1696 wrote to memory of 1400	1696	cmd.exe	logs.exe
PID 1696 wrote to memory of 1400	1696	cmd.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⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1160

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ziFpddctAZBdQ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4F59.tmp"
2⤵
- Creates scheduled task(s)
PID:1976

C:\Users\Admin\AppData\Local\Temp\New Purchase Order SSRNSSIQ102-2023.exe
"{path}"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1468

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:876

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:1860

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp6A19.tmp.bat""
3⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1696

C:\Windows\SysWOW64\timeout.exe
timeout 3
4⤵
- Delays execution with timeout.exe
PID:1432

C:\Users\Admin\AppData\Roaming\logs.exe
"C:\Users\Admin\AppData\Roaming\logs.exe"
4⤵
- Executes dropped EXE
PID:1400

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp4F59.tmp
Filesize
1KB

MD5
6074005ed1284edb1e38178d5ee5c6e9

SHA1
a041c285515da3c877ab0bc6c9a43490d05d020d

SHA256
4c63cd0b1d6f321bc226675ff6ad648dfa189c90e9148356a153fc7d878d1848

SHA512
e9c3492d3b8996b78ed15ddce2d3c16bb514e7c32945d100614345200ca5e49ead93f07b58a45752aeeb54081d439882b2fb078d9b43edd35140d1e540b72b3c

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp6A19.tmp.bat
Filesize
148B

MD5
f3e88dbe42eac2672ad4329fc29d0b35

SHA1
5e82ea517af4edc953b0ce8d2f6ff47c2ec628d1

SHA256
b702137e320685790ef6555ef2f165f3848dd5b36600c63aeca4402865796817

SHA512
943d0e7652af0a5e43a620e577b0bdeec471ee7cbad2473d8cc2fb6d388e37030c24b65b1d00cfcae58fc8b726fb392e100b6f0969fb07e0f24c7412070725e7

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp6A19.tmp.bat
Filesize
148B

MD5
f3e88dbe42eac2672ad4329fc29d0b35

SHA1
5e82ea517af4edc953b0ce8d2f6ff47c2ec628d1

SHA256
b702137e320685790ef6555ef2f165f3848dd5b36600c63aeca4402865796817

SHA512
943d0e7652af0a5e43a620e577b0bdeec471ee7cbad2473d8cc2fb6d388e37030c24b65b1d00cfcae58fc8b726fb392e100b6f0969fb07e0f24c7412070725e7

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
\Users\Admin\AppData\Roaming\logs.exe
Filesize
787KB

MD5
0e6861c721b9342f69eba894703f6484

SHA1
6c9b0712a4c249805f2f2f1760cd72cf917aa7c6

SHA256
fb037edda6db14f4cc45540ee0719c8ca02cbc7636f48c14b6dca3bd187f3e44

SHA512
6beb131306e2ae3b91d62f3630271b6755957f2046870ae4b62313851e98b4a2837053ea86d06da3f91d6b9b8ab81eb7e8bf7ccc26b1cb3cbe6cdf9e7db0dbe8

Download Submit
memory/1160-56-0x0000000004CD0000-0x0000000004D10000-memory.dmp

Filesize
256KB

Download
memory/1160-59-0x0000000000710000-0x0000000000722000-memory.dmp

Filesize
72KB

Download
memory/1160-57-0x0000000000250000-0x0000000000264000-memory.dmp

Filesize
80KB

Download
memory/1160-58-0x0000000002250000-0x00000000022B6000-memory.dmp

Filesize
408KB

Download
memory/1160-54-0x0000000000B20000-0x0000000000BEC000-memory.dmp

Filesize
816KB

Download
memory/1160-55-0x0000000004CD0000-0x0000000004D10000-memory.dmp

Filesize
256KB

Download
memory/1400-88-0x0000000004C50000-0x0000000004C90000-memory.dmp

Filesize
256KB

Download
memory/1400-87-0x0000000004C50000-0x0000000004C90000-memory.dmp

Filesize
256KB

Download
memory/1400-86-0x0000000000DD0000-0x0000000000E9C000-memory.dmp

Filesize
816KB

Download
memory/1468-65-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1468-73-0x0000000000760000-0x00000000007A0000-memory.dmp

Filesize
256KB

Download
memory/1468-72-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1468-70-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1468-68-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1468-67-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1468-66-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1468-64-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1468-63-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads