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

2692 poop.exe
Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid process

2944 cmd.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2692	poop.exe

pid	process
2944	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:

poop.exe1dc3e04c25cce7028ef9f5b645dfa6cc113c8bb3bc92aeb7d8ecf547ce12579a.execmd.execmd.exetimeout.exeschtasks.exe

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

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

1752 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

1676 schtasks.exe

pid	process
1752	timeout.exe

pid	process
1676	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

1dc3e04c25cce7028ef9f5b645dfa6cc113c8bb3bc92aeb7d8ecf547ce12579a.exe

pid	process
564	1dc3e04c25cce7028ef9f5b645dfa6cc113c8bb3bc92aeb7d8ecf547ce12579a.exe
564	1dc3e04c25cce7028ef9f5b645dfa6cc113c8bb3bc92aeb7d8ecf547ce12579a.exe
564	1dc3e04c25cce7028ef9f5b645dfa6cc113c8bb3bc92aeb7d8ecf547ce12579a.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

1dc3e04c25cce7028ef9f5b645dfa6cc113c8bb3bc92aeb7d8ecf547ce12579a.exepoop.exe

description	pid	process
Token: SeDebugPrivilege	564	1dc3e04c25cce7028ef9f5b645dfa6cc113c8bb3bc92aeb7d8ecf547ce12579a.exe
Token: SeDebugPrivilege	2692	poop.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

1dc3e04c25cce7028ef9f5b645dfa6cc113c8bb3bc92aeb7d8ecf547ce12579a.execmd.execmd.exe

description	pid	process	target process
PID 564 wrote to memory of 2684	564	1dc3e04c25cce7028ef9f5b645dfa6cc113c8bb3bc92aeb7d8ecf547ce12579a.exe	cmd.exe
PID 564 wrote to memory of 2684	564	1dc3e04c25cce7028ef9f5b645dfa6cc113c8bb3bc92aeb7d8ecf547ce12579a.exe	cmd.exe
PID 564 wrote to memory of 2684	564	1dc3e04c25cce7028ef9f5b645dfa6cc113c8bb3bc92aeb7d8ecf547ce12579a.exe	cmd.exe
PID 564 wrote to memory of 2684	564	1dc3e04c25cce7028ef9f5b645dfa6cc113c8bb3bc92aeb7d8ecf547ce12579a.exe	cmd.exe
PID 564 wrote to memory of 2944	564	1dc3e04c25cce7028ef9f5b645dfa6cc113c8bb3bc92aeb7d8ecf547ce12579a.exe	cmd.exe
PID 564 wrote to memory of 2944	564	1dc3e04c25cce7028ef9f5b645dfa6cc113c8bb3bc92aeb7d8ecf547ce12579a.exe	cmd.exe
PID 564 wrote to memory of 2944	564	1dc3e04c25cce7028ef9f5b645dfa6cc113c8bb3bc92aeb7d8ecf547ce12579a.exe	cmd.exe
PID 564 wrote to memory of 2944	564	1dc3e04c25cce7028ef9f5b645dfa6cc113c8bb3bc92aeb7d8ecf547ce12579a.exe	cmd.exe
PID 2684 wrote to memory of 1676	2684	cmd.exe	schtasks.exe
PID 2684 wrote to memory of 1676	2684	cmd.exe	schtasks.exe
PID 2684 wrote to memory of 1676	2684	cmd.exe	schtasks.exe
PID 2684 wrote to memory of 1676	2684	cmd.exe	schtasks.exe
PID 2944 wrote to memory of 1752	2944	cmd.exe	timeout.exe
PID 2944 wrote to memory of 1752	2944	cmd.exe	timeout.exe
PID 2944 wrote to memory of 1752	2944	cmd.exe	timeout.exe
PID 2944 wrote to memory of 1752	2944	cmd.exe	timeout.exe
PID 2944 wrote to memory of 2692	2944	cmd.exe	poop.exe
PID 2944 wrote to memory of 2692	2944	cmd.exe	poop.exe
PID 2944 wrote to memory of 2692	2944	cmd.exe	poop.exe
PID 2944 wrote to memory of 2692	2944	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:564

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:2684

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:1676

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp902F.tmp.bat""
2⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2944

C:\Windows\SysWOW64\timeout.exe
timeout 3
3⤵
- System Location Discovery: System Language Discovery
- Delays execution with timeout.exe
PID:1752

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:2692

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\tmp902F.tmp.bat

Filesize
148B

MD5
dfc64795ae80d8df0d9b8c93bf4ba4a9

SHA1
b18323fd1381e6c84d0e335b747100e59bc6d578

SHA256
82a3abb557ad8f957760d48bb90a24cce6b5944a56b28327047b73894b0e8fa2

SHA512
1ba0988c88e8c1309bc2c18d8a832886ac520a1ee97d7e5f8128263d37d5678403f8654e614c0f6fbb876f94ceef18dfcc82708e4f47a3005c6c21d05e47fd70

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

Filesize
47KB

MD5
70c599d7fea4b5a29f7adae785ce9bf1

SHA1
46c508df2a683eb0b2b507badc214f8e6bf13b6a

SHA256
1dc3e04c25cce7028ef9f5b645dfa6cc113c8bb3bc92aeb7d8ecf547ce12579a

SHA512
356a917c7e44a12f6a97551f907cfbd5b693ae19c7cdcb590c1691f0d4443bb3c5f56a246f5a1186ce3b6eaf5ce059047a95b3dfa2d925f470877873d4c2a09e

Download Submit
memory/564-0-0x0000000074B2E000-0x0000000074B2F000-memory.dmp

Filesize
4KB

Download
memory/564-1-0x0000000000CC0000-0x0000000000CD2000-memory.dmp

Filesize
72KB

Download
memory/564-2-0x0000000074B20000-0x000000007520E000-memory.dmp

Filesize
6.9MB

Download
memory/564-12-0x0000000074B20000-0x000000007520E000-memory.dmp

Filesize
6.9MB

Download
memory/2692-16-0x0000000000BF0000-0x0000000000C02000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads