asyncrat | b7f237af7f3c1bd7901f85cc53fdf576b06b7002726ef37c52c8c97befe283dd

General

Target

PPDF-110820.exe
Size

459KB
MD5

e762f388b8bc44a3fa8c080bdb690805
SHA1

651b43634bc5233b486e67ce13095fbdd8ccbe12
SHA256

5a5563d6a39f3753b0f18c7abcdb4a9a4fefa7ddef33e3758a51797ad72ed804
SHA512

15ddcba0202109a8d0854df1957ca17da5c5ed9725253b1b3e1b7f5427b28542c5169e0ee84f4f65e41f5511dce483b82dda6e870f4a11dce98915201728d5ea

Score

10^/10

asyncrat newjob1 evasion 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 6 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1676-64-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1676-65-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1676-66-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1676-67-0x000000000040C75E-mapping.dmp	asyncrat
behavioral1/memory/1676-69-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1676-71-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat

Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Looks for VMWare Tools registry key 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

PPDF-110820.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	PPDF-110820.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	PPDF-110820.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

PPDF-110820.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	PPDF-110820.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	PPDF-110820.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

PPDF-110820.exe

description pid process target process

PID 1476 set thread context of 1676 1476 PPDF-110820.exe MSBuild.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

556 schtasks.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

PPDF-110820.exe

pid process

1476 PPDF-110820.exe
1476 PPDF-110820.exe
1476 PPDF-110820.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

PPDF-110820.exeMSBuild.exe

description pid process

Token: SeDebugPrivilege 1476 PPDF-110820.exe
Token: SeDebugPrivilege 1676 MSBuild.exe

description	pid	process	target process
PID 1476 set thread context of 1676	1476	PPDF-110820.exe	MSBuild.exe

pid	process
556	schtasks.exe

pid	process
1476	PPDF-110820.exe
1476	PPDF-110820.exe
1476	PPDF-110820.exe

description	pid	process
Token: SeDebugPrivilege	1476	PPDF-110820.exe
Token: SeDebugPrivilege	1676	MSBuild.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

PPDF-110820.exe

description	pid	process	target process
PID 1476 wrote to memory of 556	1476	PPDF-110820.exe	schtasks.exe
PID 1476 wrote to memory of 556	1476	PPDF-110820.exe	schtasks.exe
PID 1476 wrote to memory of 556	1476	PPDF-110820.exe	schtasks.exe
PID 1476 wrote to memory of 556	1476	PPDF-110820.exe	schtasks.exe
PID 1476 wrote to memory of 980	1476	PPDF-110820.exe	MSBuild.exe
PID 1476 wrote to memory of 980	1476	PPDF-110820.exe	MSBuild.exe
PID 1476 wrote to memory of 980	1476	PPDF-110820.exe	MSBuild.exe
PID 1476 wrote to memory of 980	1476	PPDF-110820.exe	MSBuild.exe
PID 1476 wrote to memory of 1676	1476	PPDF-110820.exe	MSBuild.exe
PID 1476 wrote to memory of 1676	1476	PPDF-110820.exe	MSBuild.exe
PID 1476 wrote to memory of 1676	1476	PPDF-110820.exe	MSBuild.exe
PID 1476 wrote to memory of 1676	1476	PPDF-110820.exe	MSBuild.exe
PID 1476 wrote to memory of 1676	1476	PPDF-110820.exe	MSBuild.exe
PID 1476 wrote to memory of 1676	1476	PPDF-110820.exe	MSBuild.exe
PID 1476 wrote to memory of 1676	1476	PPDF-110820.exe	MSBuild.exe
PID 1476 wrote to memory of 1676	1476	PPDF-110820.exe	MSBuild.exe
PID 1476 wrote to memory of 1676	1476	PPDF-110820.exe	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\PPDF-110820.exe
"C:\Users\Admin\AppData\Local\Temp\PPDF-110820.exe"
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1476

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\yLKgSeYU" /XML "C:\Users\Admin\AppData\Local\Temp\tmp61FF.tmp"
2⤵
- Creates scheduled task(s)
PID:556

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
2⤵
PID:980

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
2⤵
- Suspicious use of AdjustPrivilegeToken
PID:1676

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

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Discovery

Query Registry

4

T1012

Virtualization/Sandbox Evasion

2

T1497

System Information Discovery

3

T1082

Peripheral Device Discovery

1

T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

1

T1102

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp61FF.tmp
Filesize
1KB

MD5
e7ed0bdc2321544bcde06f7e9d437eb0

SHA1
468064b12f83fc49b9c3368c587da12307723b58

SHA256
d81b53b319bf62717f247c483b691ffcf4482c6e6f8daf860ba840ac207e8f6d

SHA512
beb1ebfc4dfb80743d0b73e35298770db1ec02274cd030e7446f035369aea406d6af6d8b0cf5fee7873c70df726c129e16587ba7569b9b99cb95516c14a7f372

Download Submit
memory/556-59-0x0000000000000000-mapping.dmp

Download
memory/1476-57-0x0000000005E80000-0x0000000005EAC000-memory.dmp

Filesize
176KB

Download
memory/1476-54-0x00000000010A0000-0x0000000001118000-memory.dmp

Filesize
480KB

Download
memory/1476-58-0x00000000009A0000-0x00000000009B2000-memory.dmp

Filesize
72KB

Download
memory/1476-56-0x00000000004F0000-0x0000000000502000-memory.dmp

Filesize
72KB

Download
memory/1476-55-0x0000000075721000-0x0000000075723000-memory.dmp

Filesize
8KB

Download
memory/1676-61-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1676-62-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1676-64-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1676-65-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1676-66-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1676-67-0x000000000040C75E-mapping.dmp

Download
memory/1676-69-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1676-71-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads