asyncrat | f323b5b0eae72fea64467cc0cc66af93aedac7a524246b7014ef63b50e325ff7

General

Target

TONDDOS.exe
Size

75KB
MD5

06eaec3a5cb7252e97abd37ddf54197f
SHA1

74e6a469391440d9ac7d1adc9441da069d9cfc44
SHA256

f323b5b0eae72fea64467cc0cc66af93aedac7a524246b7014ef63b50e325ff7
SHA512

514522a7284dcec3a7f8c57370c05086ad0852f63937b39ef0800d8180a978539afb4047e8c064ec4455030ddbe2b8fc1d95b053e2b729e8569425900783a66f
SSDEEP

1536:Tu2z1T1y52I40FvL5AbnfxOv0qid0d825Zw9:Tu2xT1y52I40FvebnUvhid0tHw9

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
true
install_file
launcher1.exe
install_folder
%AppData%
pastebin_config
https://pastebin.com/raw/xaLN0L9h

aes.plain

Signatures

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

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/files/0x00040000000229cb-12.dat	family_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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	TONDDOS.exe

Executes dropped EXE 1 IoCs

pid	Process
3820	launcher1.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 5 IoCs

Web Service

T1102

flow	ioc
18	4.tcp.ngrok.io
30	4.tcp.ngrok.io
10	pastebin.com
11	pastebin.com
12	4.tcp.ngrok.io

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

System Information Discovery
T1082

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

description	ioc	Process
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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	launcher1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	TONDDOS.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4740	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

pid	Process
2976	schtasks.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

pid	Process
3460	TONDDOS.exe
3460	TONDDOS.exe
3460	TONDDOS.exe
3460	TONDDOS.exe
3460	TONDDOS.exe
3460	TONDDOS.exe
3460	TONDDOS.exe
3460	TONDDOS.exe
3460	TONDDOS.exe
3460	TONDDOS.exe
3460	TONDDOS.exe
3460	TONDDOS.exe
3460	TONDDOS.exe
3460	TONDDOS.exe
3460	TONDDOS.exe
3460	TONDDOS.exe
3460	TONDDOS.exe
3460	TONDDOS.exe
3460	TONDDOS.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3460	TONDDOS.exe
Token: SeDebugPrivilege	3820	launcher1.exe
Token: SeDebugPrivilege	3820	launcher1.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3460 wrote to memory of 3236	3460	TONDDOS.exe	89
PID 3460 wrote to memory of 3236	3460	TONDDOS.exe	89
PID 3460 wrote to memory of 3236	3460	TONDDOS.exe	89
PID 3460 wrote to memory of 3116	3460	TONDDOS.exe	91
PID 3460 wrote to memory of 3116	3460	TONDDOS.exe	91
PID 3460 wrote to memory of 3116	3460	TONDDOS.exe	91
PID 3116 wrote to memory of 4740	3116	cmd.exe	94
PID 3116 wrote to memory of 4740	3116	cmd.exe	94
PID 3116 wrote to memory of 4740	3116	cmd.exe	94
PID 3236 wrote to memory of 2976	3236	cmd.exe	93
PID 3236 wrote to memory of 2976	3236	cmd.exe	93
PID 3236 wrote to memory of 2976	3236	cmd.exe	93
PID 3116 wrote to memory of 3820	3116	cmd.exe	95
PID 3116 wrote to memory of 3820	3116	cmd.exe	95
PID 3116 wrote to memory of 3820	3116	cmd.exe	95

C:\Users\Admin\AppData\Local\Temp\TONDDOS.exe
"C:\Users\Admin\AppData\Local\Temp\TONDDOS.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3460
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "launcher1" /tr '"C:\Users\Admin\AppData\Roaming\launcher1.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3236
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "launcher1" /tr '"C:\Users\Admin\AppData\Roaming\launcher1.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2976
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpE232.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3116
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4740
- - C:\Users\Admin\AppData\Roaming\launcher1.exe
    "C:\Users\Admin\AppData\Roaming\launcher1.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:3820

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

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpE232.tmp.bat

Filesize
153B

MD5
7d8f131365c32c786971149fba6e6ff1

SHA1
ebb996ddfb31b12d0e7585f3e62f6a72640091d4

SHA256
9a2676f301ebd483a32d27574b412f1765a6b35efbd710a650223661928c678c

SHA512
6a24660a91a4617cfec3adaf0f7adcc666e8477a47386ea2bbb7cab9679f08f3e71816c60cc69bd416e6c947c9509a73baf7b21d8fa9b3687d2ba378fd6b1440

Download Submit
C:\Users\Admin\AppData\Roaming\launcher1.exe

Filesize
75KB

MD5
06eaec3a5cb7252e97abd37ddf54197f

SHA1
74e6a469391440d9ac7d1adc9441da069d9cfc44

SHA256
f323b5b0eae72fea64467cc0cc66af93aedac7a524246b7014ef63b50e325ff7

SHA512
514522a7284dcec3a7f8c57370c05086ad0852f63937b39ef0800d8180a978539afb4047e8c064ec4455030ddbe2b8fc1d95b053e2b729e8569425900783a66f

Download Submit
memory/3460-0-0x000000007480E000-0x000000007480F000-memory.dmp

Filesize
4KB

Download
memory/3460-1-0x0000000000020000-0x0000000000038000-memory.dmp

Filesize
96KB

Download
memory/3460-2-0x0000000074800000-0x0000000074FB0000-memory.dmp

Filesize
7.7MB

Download
memory/3460-3-0x0000000004870000-0x00000000048D6000-memory.dmp

Filesize
408KB

Download
memory/3460-4-0x0000000004D40000-0x0000000004DDC000-memory.dmp

Filesize
624KB

Download
memory/3460-9-0x0000000074800000-0x0000000074FB0000-memory.dmp

Filesize
7.7MB

Download
memory/3820-14-0x0000000074420000-0x0000000074BD0000-memory.dmp

Filesize
7.7MB

Download
memory/3820-15-0x0000000074420000-0x0000000074BD0000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads