asyncrat | 5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb

General

Target

5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
Size

256KB
MD5

5e2250b31ec719a3f37b0e0d5a922ce6
SHA1

5ca6077879418d910079222335fb5903eb7048b9
SHA256

5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb
SHA512

df25a8d4afa71edb88c0dd167badbd0b932b7674f1d0c3a81cd8976252a9555dc58322333871db4d248ea02020b0f91cf300b9845a478763b0872c880fcae5ad
SSDEEP

6144:4tAUWUhx4fQUZsb88mBTgbbBqLa1F4kIn1cgmlwYbFBtamZ0bSI:4uYhx4f/ZSbbBqJcgmlwYbFBtamZ0bX

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

154.216.17.207:7707

154.216.17.207:8808

154.216.17.207:1188

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
100
install
true
install_file
file.exe
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat

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:

5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe

Executes dropped EXE 3 IoCs

Processes:

file.exefile.exefile.exe

pid process

796 file.exe
1456 file.exe
2556 file.exe

pid	process
796	file.exe
1456	file.exe
2556	file.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exefile.exe

description	pid	process	target process
PID 2084 set thread context of 1900	2084	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
PID 2084 set thread context of 2764	2084	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
PID 796 set thread context of 1456	796	file.exe	file.exe
PID 796 set thread context of 2556	796	file.exe	file.exe

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

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1400 2764 WerFault.exe 5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe

pid	pid_target	process	target process
1400	2764	WerFault.exe	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe

System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.execmd.execmd.exeschtasks.exefile.exe5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exetimeout.exefile.exefile.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	file.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	file.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	file.exe

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

920 timeout.exe
Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence execution

Scheduled Task
T1053.005

Processes:

schtasks.exe

pid process

1640 schtasks.exe

pid	process
920	timeout.exe

pid	process
1640	schtasks.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

Processes:

5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe

pid	process
1900	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
1900	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
1900	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
1900	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
1900	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
1900	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
1900	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
1900	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
1900	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
1900	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
1900	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
1900	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
1900	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
1900	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
1900	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
1900	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
1900	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
1900	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
1900	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exefile.exe

description	pid	process
Token: SeDebugPrivilege	2084	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
Token: SeDebugPrivilege	1900	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
Token: SeDebugPrivilege	796	file.exe

Suspicious use of WriteProcessMemory 47 IoCs

Processes:

5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.execmd.execmd.exefile.exe

description	pid	process	target process
PID 2084 wrote to memory of 1900	2084	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
PID 2084 wrote to memory of 1900	2084	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
PID 2084 wrote to memory of 1900	2084	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
PID 2084 wrote to memory of 1900	2084	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
PID 2084 wrote to memory of 1900	2084	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
PID 2084 wrote to memory of 1900	2084	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
PID 2084 wrote to memory of 1900	2084	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
PID 2084 wrote to memory of 1900	2084	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
PID 2084 wrote to memory of 2764	2084	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
PID 2084 wrote to memory of 2764	2084	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
PID 2084 wrote to memory of 2764	2084	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
PID 2084 wrote to memory of 2764	2084	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
PID 2084 wrote to memory of 2764	2084	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
PID 2084 wrote to memory of 2764	2084	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
PID 2084 wrote to memory of 2764	2084	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
PID 2084 wrote to memory of 2764	2084	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
PID 1900 wrote to memory of 116	1900	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe	cmd.exe
PID 1900 wrote to memory of 116	1900	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe	cmd.exe
PID 1900 wrote to memory of 116	1900	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe	cmd.exe
PID 1900 wrote to memory of 4232	1900	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe	cmd.exe
PID 1900 wrote to memory of 4232	1900	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe	cmd.exe
PID 1900 wrote to memory of 4232	1900	5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe	cmd.exe
PID 116 wrote to memory of 1640	116	cmd.exe	schtasks.exe
PID 116 wrote to memory of 1640	116	cmd.exe	schtasks.exe
PID 116 wrote to memory of 1640	116	cmd.exe	schtasks.exe
PID 4232 wrote to memory of 920	4232	cmd.exe	timeout.exe
PID 4232 wrote to memory of 920	4232	cmd.exe	timeout.exe
PID 4232 wrote to memory of 920	4232	cmd.exe	timeout.exe
PID 4232 wrote to memory of 796	4232	cmd.exe	file.exe
PID 4232 wrote to memory of 796	4232	cmd.exe	file.exe
PID 4232 wrote to memory of 796	4232	cmd.exe	file.exe
PID 796 wrote to memory of 1456	796	file.exe	file.exe
PID 796 wrote to memory of 1456	796	file.exe	file.exe
PID 796 wrote to memory of 1456	796	file.exe	file.exe
PID 796 wrote to memory of 1456	796	file.exe	file.exe
PID 796 wrote to memory of 1456	796	file.exe	file.exe
PID 796 wrote to memory of 1456	796	file.exe	file.exe
PID 796 wrote to memory of 1456	796	file.exe	file.exe
PID 796 wrote to memory of 1456	796	file.exe	file.exe
PID 796 wrote to memory of 2556	796	file.exe	file.exe
PID 796 wrote to memory of 2556	796	file.exe	file.exe
PID 796 wrote to memory of 2556	796	file.exe	file.exe
PID 796 wrote to memory of 2556	796	file.exe	file.exe
PID 796 wrote to memory of 2556	796	file.exe	file.exe
PID 796 wrote to memory of 2556	796	file.exe	file.exe
PID 796 wrote to memory of 2556	796	file.exe	file.exe
PID 796 wrote to memory of 2556	796	file.exe	file.exe

C:\Users\Admin\AppData\Local\Temp\5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
"C:\Users\Admin\AppData\Local\Temp\5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2084

C:\Users\Admin\AppData\Local\Temp\5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
C:\Users\Admin\AppData\Local\Temp\5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
2⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1900

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "file" /tr '"C:\Users\Admin\AppData\Roaming\file.exe"' & exit
3⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:116

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "file" /tr '"C:\Users\Admin\AppData\Roaming\file.exe"'
4⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:1640

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp3EA5.tmp.bat""
3⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4232

C:\Windows\SysWOW64\timeout.exe
timeout 3
4⤵
- System Location Discovery: System Language Discovery
- Delays execution with timeout.exe
PID:920

C:\Users\Admin\AppData\Roaming\file.exe
"C:\Users\Admin\AppData\Roaming\file.exe"
4⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:796

C:\Users\Admin\AppData\Roaming\file.exe
C:\Users\Admin\AppData\Roaming\file.exe
5⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:1456

C:\Users\Admin\AppData\Roaming\file.exe
C:\Users\Admin\AppData\Roaming\file.exe
5⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:2556

C:\Users\Admin\AppData\Local\Temp\5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
C:\Users\Admin\AppData\Local\Temp\5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe
2⤵
PID:2764

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2764 -s 80
3⤵
- Program crash
PID:1400

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2764 -ip 2764
1⤵
PID:4492

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb.exe.log

Filesize
706B

MD5
d95c58e609838928f0f49837cab7dfd2

SHA1
55e7139a1e3899195b92ed8771d1ca2c7d53c916

SHA256
0407c814aef0d62aec7fd39b7c2f614746f0d8ff41f8ef957736f520f14b0339

SHA512
405310b29a833604c6627063bfdcf055a197e01f633ef21da238f1a6415a02e21315d689b4a6669db23e82152bed6f3492afb60963e6b2a0e9bb2ac09a480b5d

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp3EA5.tmp.bat

Filesize
148B

MD5
29cd8e324204cde777ed95e1c19b66b3

SHA1
a63f58d94fdf4288464a7e3fa12b73dbc588c03e

SHA256
ef54aca6cef20b3f25884620cac1b0e27627d2bb8284f372622dc52c43827d8c

SHA512
52a1e173869b78c6967fe13cd59835f374d1fc2a7f054eb64cd8692a90a6031692c4a7dd31a6513c5059496bd3367ef356618e11e8d1a2760940ef763f868c62

Download Submit
C:\Users\Admin\AppData\Roaming\file.exe

Filesize
256KB

MD5
5e2250b31ec719a3f37b0e0d5a922ce6

SHA1
5ca6077879418d910079222335fb5903eb7048b9

SHA256
5be7483945953a8b8ffd55749ab84dec1a13b69427b3cb7694445ed8ffc834cb

SHA512
df25a8d4afa71edb88c0dd167badbd0b932b7674f1d0c3a81cd8976252a9555dc58322333871db4d248ea02020b0f91cf300b9845a478763b0872c880fcae5ad

Download Submit
memory/1900-9-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1900-21-0x0000000074DB0000-0x0000000075560000-memory.dmp

Filesize
7.7MB

Download
memory/1900-16-0x0000000005110000-0x0000000005176000-memory.dmp

Filesize
408KB

Download
memory/1900-15-0x0000000074DB0000-0x0000000075560000-memory.dmp

Filesize
7.7MB

Download
memory/1900-14-0x0000000074DB0000-0x0000000075560000-memory.dmp

Filesize
7.7MB

Download
memory/1900-12-0x0000000074DB0000-0x0000000075560000-memory.dmp

Filesize
7.7MB

Download
memory/2084-4-0x0000000074DB0000-0x0000000075560000-memory.dmp

Filesize
7.7MB

Download
memory/2084-8-0x0000000004640000-0x0000000004646000-memory.dmp

Filesize
24KB

Download
memory/2084-13-0x0000000074DB0000-0x0000000075560000-memory.dmp

Filesize
7.7MB

Download
memory/2084-7-0x000000000D8F0000-0x000000000D982000-memory.dmp

Filesize
584KB

Download
memory/2084-6-0x000000000DE00000-0x000000000E3A4000-memory.dmp

Filesize
5.6MB

Download
memory/2084-5-0x000000000D7B0000-0x000000000D84C000-memory.dmp

Filesize
624KB

Download
memory/2084-0-0x0000000074DBE000-0x0000000074DBF000-memory.dmp

Filesize
4KB

Download
memory/2084-3-0x000000000D6D0000-0x000000000D710000-memory.dmp

Filesize
256KB

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memory/2084-2-0x0000000002490000-0x0000000002496000-memory.dmp

Filesize
24KB

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memory/2084-1-0x0000000000150000-0x000000000019A000-memory.dmp

Filesize
296KB

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads