asyncrat | 8d81288e14060608e6376a3cfbd597c9b046d48352cb831e0a6cce03fee9a2b3

General

Target

PDF 0324.exe
Size

483KB
MD5

fe0d59b23aacdad709f375bdfdf9f14c
SHA1

6427f34f2a272415f9dc741392011898fbe38e72
SHA256

e163a54c8c3664887553b9a5e335a4dbb58b350634e6b204676bc63e454ba868
SHA512

d643e0cb9ed8a0c474d657c6c54f77058fb0dc1ae4268d34e7d69db74e1a6046c63f905bf42b5ca9c1a4a3297325cea8a3d09de5d8c7a11ea35c28a56d4c9d4d

Score

10^/10

asyncrat newjob1 agilenet persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

newjob1

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
false
install_folder
%AppData%
pastebin_config
https://pastebin.com/raw/eeJq8Ku6

aes.plain

Signatures

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

Async RAT payload 12 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/848-54-0x00000000002C0000-0x000000000033E000-memory.dmp	asyncrat
\Users\Admin\AppData\Roaming\ttyu.exe	asyncrat
C:\Users\Admin\AppData\Roaming\ttyu.exe	asyncrat
C:\Users\Admin\AppData\Roaming\ttyu.exe	asyncrat
behavioral1/memory/876-64-0x00000000001D0000-0x000000000024E000-memory.dmp	asyncrat
behavioral1/memory/1528-72-0x0000000000080000-0x0000000000092000-memory.dmp	asyncrat
behavioral1/memory/1528-73-0x0000000000080000-0x0000000000092000-memory.dmp	asyncrat
behavioral1/memory/1528-75-0x000000000040C75E-mapping.dmp	asyncrat
behavioral1/memory/1528-77-0x0000000000080000-0x0000000000092000-memory.dmp	asyncrat
behavioral1/memory/1528-78-0x0000000000080000-0x0000000000092000-memory.dmp	asyncrat
behavioral1/memory/1528-82-0x0000000000080000-0x0000000000092000-memory.dmp	asyncrat
behavioral1/memory/1528-85-0x0000000000080000-0x0000000000092000-memory.dmp	asyncrat

Executes dropped EXE 2 IoCs

Processes:

ttyu.exeAddInProcess32.exe

pid process

876 ttyu.exe
1528 AddInProcess32.exe
Loads dropped DLL 2 IoCs

Processes:

PDF 0324.exettyu.exe

pid process

848 PDF 0324.exe
876 ttyu.exe

pid	process
876	ttyu.exe
1528	AddInProcess32.exe

pid	process
848	PDF 0324.exe
876	ttyu.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/848-57-0x00000000003F0000-0x0000000000400000-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-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows\CurrentVersion\Run\ttyt = "C:\\Windows\\system32\\pcalua.exe -a C:\\Users\\Admin\\AppData\\Roaming\\ttyu.exe"	reg.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
Suspicious use of SetThreadContext 1 IoCs

Processes:

ttyu.exe

description pid process target process

PID 876 set thread context of 1528 876 ttyu.exe AddInProcess32.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	pid	process	target process
PID 876 set thread context of 1528	876	ttyu.exe	AddInProcess32.exe

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

Processes:

AddInProcess32.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D4DE20D05E66FC53FE1A50882C78DB2852CAE474	AddInProcess32.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D4DE20D05E66FC53FE1A50882C78DB2852CAE474\Blob = 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	AddInProcess32.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

PDF 0324.exettyu.exe

pid process

848 PDF 0324.exe
848 PDF 0324.exe
876 ttyu.exe
876 ttyu.exe
876 ttyu.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

PDF 0324.exettyu.exeAddInProcess32.exe

description pid process

Token: SeDebugPrivilege 848 PDF 0324.exe
Token: SeDebugPrivilege 876 ttyu.exe
Token: SeDebugPrivilege 1528 AddInProcess32.exe

pid	process
848	PDF 0324.exe
848	PDF 0324.exe
876	ttyu.exe
876	ttyu.exe
876	ttyu.exe

description	pid	process
Token: SeDebugPrivilege	848	PDF 0324.exe
Token: SeDebugPrivilege	876	ttyu.exe
Token: SeDebugPrivilege	1528	AddInProcess32.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

PDF 0324.execmd.exettyu.exe

description	pid	process	target process
PID 848 wrote to memory of 2044	848	PDF 0324.exe	cmd.exe
PID 848 wrote to memory of 2044	848	PDF 0324.exe	cmd.exe
PID 848 wrote to memory of 2044	848	PDF 0324.exe	cmd.exe
PID 848 wrote to memory of 2044	848	PDF 0324.exe	cmd.exe
PID 2044 wrote to memory of 2012	2044	cmd.exe	reg.exe
PID 2044 wrote to memory of 2012	2044	cmd.exe	reg.exe
PID 2044 wrote to memory of 2012	2044	cmd.exe	reg.exe
PID 2044 wrote to memory of 2012	2044	cmd.exe	reg.exe
PID 848 wrote to memory of 876	848	PDF 0324.exe	ttyu.exe
PID 848 wrote to memory of 876	848	PDF 0324.exe	ttyu.exe
PID 848 wrote to memory of 876	848	PDF 0324.exe	ttyu.exe
PID 848 wrote to memory of 876	848	PDF 0324.exe	ttyu.exe
PID 876 wrote to memory of 1528	876	ttyu.exe	AddInProcess32.exe
PID 876 wrote to memory of 1528	876	ttyu.exe	AddInProcess32.exe
PID 876 wrote to memory of 1528	876	ttyu.exe	AddInProcess32.exe
PID 876 wrote to memory of 1528	876	ttyu.exe	AddInProcess32.exe
PID 876 wrote to memory of 1528	876	ttyu.exe	AddInProcess32.exe
PID 876 wrote to memory of 1528	876	ttyu.exe	AddInProcess32.exe
PID 876 wrote to memory of 1528	876	ttyu.exe	AddInProcess32.exe
PID 876 wrote to memory of 1528	876	ttyu.exe	AddInProcess32.exe
PID 876 wrote to memory of 1528	876	ttyu.exe	AddInProcess32.exe

C:\Users\Admin\AppData\Local\Temp\PDF 0324.exe
"C:\Users\Admin\AppData\Local\Temp\PDF 0324.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:848

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v ttyt /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\ttyu.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:2044

C:\Windows\SysWOW64\reg.exe
REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v ttyt /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\ttyu.exe"
3⤵
- Adds Run key to start application
PID:2012

C:\Users\Admin\AppData\Roaming\ttyu.exe
"C:\Users\Admin\AppData\Roaming\ttyu.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:876

C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe
"C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe"
3⤵
- Executes dropped EXE
- Modifies system certificate store
- Suspicious use of AdjustPrivilegeToken
PID:1528

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Install Root Certificate

1

T1130

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

1

T1102

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe
Filesize
41KB

MD5
6a673bfc3b67ae9782cb31af2f234c68

SHA1
7544e89566d91e84e3cd437b9a073e5f6b56566e

SHA256
978a4093058aa2ebf05dc353897d90d950324389879b57741b64160825b5ec0e

SHA512
72c302372ce87ceda2a3c70a6005d3f9c112f1641bc7fe6824c718971233e66c07e2996d2785fa358566c38714c25ea812c05c7cfd2f588284849d495fd24f39

Download Submit
C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe
Filesize
41KB

MD5
6a673bfc3b67ae9782cb31af2f234c68

SHA1
7544e89566d91e84e3cd437b9a073e5f6b56566e

SHA256
978a4093058aa2ebf05dc353897d90d950324389879b57741b64160825b5ec0e

SHA512
72c302372ce87ceda2a3c70a6005d3f9c112f1641bc7fe6824c718971233e66c07e2996d2785fa358566c38714c25ea812c05c7cfd2f588284849d495fd24f39

Download Submit
C:\Users\Admin\AppData\Roaming\ttyu.exe
Filesize
483KB

MD5
fe0d59b23aacdad709f375bdfdf9f14c

SHA1
6427f34f2a272415f9dc741392011898fbe38e72

SHA256
e163a54c8c3664887553b9a5e335a4dbb58b350634e6b204676bc63e454ba868

SHA512
d643e0cb9ed8a0c474d657c6c54f77058fb0dc1ae4268d34e7d69db74e1a6046c63f905bf42b5ca9c1a4a3297325cea8a3d09de5d8c7a11ea35c28a56d4c9d4d

Download Submit
C:\Users\Admin\AppData\Roaming\ttyu.exe
Filesize
483KB

MD5
fe0d59b23aacdad709f375bdfdf9f14c

SHA1
6427f34f2a272415f9dc741392011898fbe38e72

SHA256
e163a54c8c3664887553b9a5e335a4dbb58b350634e6b204676bc63e454ba868

SHA512
d643e0cb9ed8a0c474d657c6c54f77058fb0dc1ae4268d34e7d69db74e1a6046c63f905bf42b5ca9c1a4a3297325cea8a3d09de5d8c7a11ea35c28a56d4c9d4d

Download Submit
\Users\Admin\AppData\Local\Temp\AddInProcess32.exe
Filesize
41KB

MD5
6a673bfc3b67ae9782cb31af2f234c68

SHA1
7544e89566d91e84e3cd437b9a073e5f6b56566e

SHA256
978a4093058aa2ebf05dc353897d90d950324389879b57741b64160825b5ec0e

SHA512
72c302372ce87ceda2a3c70a6005d3f9c112f1641bc7fe6824c718971233e66c07e2996d2785fa358566c38714c25ea812c05c7cfd2f588284849d495fd24f39

Download Submit
\Users\Admin\AppData\Roaming\ttyu.exe
Filesize
483KB

MD5
fe0d59b23aacdad709f375bdfdf9f14c

SHA1
6427f34f2a272415f9dc741392011898fbe38e72

SHA256
e163a54c8c3664887553b9a5e335a4dbb58b350634e6b204676bc63e454ba868

SHA512
d643e0cb9ed8a0c474d657c6c54f77058fb0dc1ae4268d34e7d69db74e1a6046c63f905bf42b5ca9c1a4a3297325cea8a3d09de5d8c7a11ea35c28a56d4c9d4d

Download Submit
memory/848-56-0x00000000003B0000-0x00000000003E4000-memory.dmp

Filesize
208KB

Download
memory/848-54-0x00000000002C0000-0x000000000033E000-memory.dmp

Filesize
504KB

Download
memory/848-55-0x0000000075941000-0x0000000075943000-memory.dmp

Filesize
8KB

Download
memory/848-57-0x00000000003F0000-0x0000000000400000-memory.dmp

Filesize
64KB

Download
memory/876-61-0x0000000000000000-mapping.dmp

Download
memory/876-66-0x0000000000690000-0x00000000006A0000-memory.dmp

Filesize
64KB

Download
memory/876-64-0x00000000001D0000-0x000000000024E000-memory.dmp

Filesize
504KB

Download
memory/1528-73-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/1528-85-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/1528-72-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/1528-70-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/1528-75-0x000000000040C75E-mapping.dmp

Download
memory/1528-77-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/1528-78-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/1528-82-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/1528-69-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/2012-59-0x0000000000000000-mapping.dmp

Download
memory/2044-58-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads