asyncrat | 1dc3e04c25cce7028ef9f5b645dfa6cc113c8bb3bc92aeb7d8ecf547ce12579a

General

Target

1dc3e04c25cce7028ef9f5b645dfa6cc113c8bb3bc92aeb7d8ecf547ce12579a.exe
Size

47KB
MD5

70c599d7fea4b5a29f7adae785ce9bf1
SHA1

46c508df2a683eb0b2b507badc214f8e6bf13b6a
SHA256

1dc3e04c25cce7028ef9f5b645dfa6cc113c8bb3bc92aeb7d8ecf547ce12579a
SHA512

356a917c7e44a12f6a97551f907cfbd5b693ae19c7cdcb590c1691f0d4443bb3c5f56a246f5a1186ce3b6eaf5ce059047a95b3dfa2d925f470877873d4c2a09e
SSDEEP

768:xu6XdTvER+SWUk6P4mo2qbrtM2KOB4Jrd0PImLzzJs9D0bHrMgIvjzKxFojwQBDo:xu6XdTv2S2EtCdd5Uzz7bHrCKxa0GdMx

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808

Mutex

WHXr1NLnlupn

Attributes

delay
3
install
true
install_file
poop.exe
install_folder
%AppData%

aes.plain

Signatures

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

Async RAT payload 1 IoCs

rat

Processes:

resource	yara_rule
\Users\Admin\AppData\Roaming\poop.exe	family_asyncrat

Executes dropped EXE 1 IoCs

Processes:

poop.exe

pid process

2680 poop.exe
Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid process

2780 cmd.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2680	poop.exe

pid	process
2780	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 6 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:

cmd.exeschtasks.execmd.exetimeout.exepoop.exe1dc3e04c25cce7028ef9f5b645dfa6cc113c8bb3bc92aeb7d8ecf547ce12579a.exe

description	ioc	process
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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	poop.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1dc3e04c25cce7028ef9f5b645dfa6cc113c8bb3bc92aeb7d8ecf547ce12579a.exe

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

2768 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

2704 schtasks.exe

pid	process
2768	timeout.exe

pid	process
2704	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

1dc3e04c25cce7028ef9f5b645dfa6cc113c8bb3bc92aeb7d8ecf547ce12579a.exe

pid	process
2136	1dc3e04c25cce7028ef9f5b645dfa6cc113c8bb3bc92aeb7d8ecf547ce12579a.exe
2136	1dc3e04c25cce7028ef9f5b645dfa6cc113c8bb3bc92aeb7d8ecf547ce12579a.exe
2136	1dc3e04c25cce7028ef9f5b645dfa6cc113c8bb3bc92aeb7d8ecf547ce12579a.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

1dc3e04c25cce7028ef9f5b645dfa6cc113c8bb3bc92aeb7d8ecf547ce12579a.exepoop.exe

description	pid	process
Token: SeDebugPrivilege	2136	1dc3e04c25cce7028ef9f5b645dfa6cc113c8bb3bc92aeb7d8ecf547ce12579a.exe
Token: SeDebugPrivilege	2680	poop.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

1dc3e04c25cce7028ef9f5b645dfa6cc113c8bb3bc92aeb7d8ecf547ce12579a.execmd.execmd.exe

description	pid	process	target process
PID 2136 wrote to memory of 2636	2136	1dc3e04c25cce7028ef9f5b645dfa6cc113c8bb3bc92aeb7d8ecf547ce12579a.exe	cmd.exe
PID 2136 wrote to memory of 2636	2136	1dc3e04c25cce7028ef9f5b645dfa6cc113c8bb3bc92aeb7d8ecf547ce12579a.exe	cmd.exe
PID 2136 wrote to memory of 2636	2136	1dc3e04c25cce7028ef9f5b645dfa6cc113c8bb3bc92aeb7d8ecf547ce12579a.exe	cmd.exe
PID 2136 wrote to memory of 2636	2136	1dc3e04c25cce7028ef9f5b645dfa6cc113c8bb3bc92aeb7d8ecf547ce12579a.exe	cmd.exe
PID 2136 wrote to memory of 2780	2136	1dc3e04c25cce7028ef9f5b645dfa6cc113c8bb3bc92aeb7d8ecf547ce12579a.exe	cmd.exe
PID 2136 wrote to memory of 2780	2136	1dc3e04c25cce7028ef9f5b645dfa6cc113c8bb3bc92aeb7d8ecf547ce12579a.exe	cmd.exe
PID 2136 wrote to memory of 2780	2136	1dc3e04c25cce7028ef9f5b645dfa6cc113c8bb3bc92aeb7d8ecf547ce12579a.exe	cmd.exe
PID 2136 wrote to memory of 2780	2136	1dc3e04c25cce7028ef9f5b645dfa6cc113c8bb3bc92aeb7d8ecf547ce12579a.exe	cmd.exe
PID 2636 wrote to memory of 2704	2636	cmd.exe	schtasks.exe
PID 2636 wrote to memory of 2704	2636	cmd.exe	schtasks.exe
PID 2636 wrote to memory of 2704	2636	cmd.exe	schtasks.exe
PID 2636 wrote to memory of 2704	2636	cmd.exe	schtasks.exe
PID 2780 wrote to memory of 2768	2780	cmd.exe	timeout.exe
PID 2780 wrote to memory of 2768	2780	cmd.exe	timeout.exe
PID 2780 wrote to memory of 2768	2780	cmd.exe	timeout.exe
PID 2780 wrote to memory of 2768	2780	cmd.exe	timeout.exe
PID 2780 wrote to memory of 2680	2780	cmd.exe	poop.exe
PID 2780 wrote to memory of 2680	2780	cmd.exe	poop.exe
PID 2780 wrote to memory of 2680	2780	cmd.exe	poop.exe
PID 2780 wrote to memory of 2680	2780	cmd.exe	poop.exe

C:\Users\Admin\AppData\Local\Temp\1dc3e04c25cce7028ef9f5b645dfa6cc113c8bb3bc92aeb7d8ecf547ce12579a.exe
"C:\Users\Admin\AppData\Local\Temp\1dc3e04c25cce7028ef9f5b645dfa6cc113c8bb3bc92aeb7d8ecf547ce12579a.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2136

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "poop" /tr '"C:\Users\Admin\AppData\Roaming\poop.exe"' & exit
2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2636

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "poop" /tr '"C:\Users\Admin\AppData\Roaming\poop.exe"'
3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:2704

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpE975.tmp.bat""
2⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2780

C:\Windows\SysWOW64\timeout.exe
timeout 3
3⤵
- System Location Discovery: System Language Discovery
- Delays execution with timeout.exe
PID:2768

C:\Users\Admin\AppData\Roaming\poop.exe
"C:\Users\Admin\AppData\Roaming\poop.exe"
3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:2680

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

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpE975.tmp.bat

Filesize
148B

MD5
c3eb963f741c8600d63a295c08e791b0

SHA1
56e03c02f14b8e6ceedb7c746c39457bfe4a34c1

SHA256
dd6d298253bdf6abb5a7d2251a06aa75d6785db3626e1565aefbba2943e078b0

SHA512
761eaba234c3fc4c4e9e1c91c264f616bd0b65975f8fc127ceb480c2008513b1bd21aef95b4e57fcc67c1dc99274d1e9237e2af103bef673aac60f0ae52fc060

Download Submit
\Users\Admin\AppData\Roaming\poop.exe

Filesize
47KB

MD5
70c599d7fea4b5a29f7adae785ce9bf1

SHA1
46c508df2a683eb0b2b507badc214f8e6bf13b6a

SHA256
1dc3e04c25cce7028ef9f5b645dfa6cc113c8bb3bc92aeb7d8ecf547ce12579a

SHA512
356a917c7e44a12f6a97551f907cfbd5b693ae19c7cdcb590c1691f0d4443bb3c5f56a246f5a1186ce3b6eaf5ce059047a95b3dfa2d925f470877873d4c2a09e

Download Submit
memory/2136-0-0x000000007463E000-0x000000007463F000-memory.dmp

Filesize
4KB

Download
memory/2136-1-0x0000000000BE0000-0x0000000000BF2000-memory.dmp

Filesize
72KB

Download
memory/2136-2-0x0000000074630000-0x0000000074D1E000-memory.dmp

Filesize
6.9MB

Download
memory/2136-11-0x0000000074630000-0x0000000074D1E000-memory.dmp

Filesize
6.9MB

Download
memory/2680-16-0x0000000000FF0000-0x0000000001002000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads