asyncrat | b440f7efd5865cb247ba6bdbb9a64480aa41269b7da563f41449fba038787d49

General

Target

97f70b6807192398746dd93449c2fdf4353533313c021aca4d0aa5e74f82d990.exe
Size

65KB
MD5

3712477f2075218e74bdf987b23b578d
SHA1

95d8ef64bfc80a2cda65a4992a63083988207f67
SHA256

97f70b6807192398746dd93449c2fdf4353533313c021aca4d0aa5e74f82d990
SHA512

1a767e93ca25f0117864a5c3e1eced57a8142d5fc3d300f64f2460aac3e13ae826fc06aba195f75184651f06a76ad8f2c7adeb35ff297dc7a2ce55b9503e2e8f
SSDEEP

1536:dumO1TQq726uw/O2CenkR7bExca0tICKfX5WxHd5w:dumaTQq725w/bCenkVbExzCKfX8xHjw

Score

10^/10

asyncrat hei rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Hei

Mutex

r6rQyqJg4Z3n

Attributes

c2_url_file
http://d.sso.mom:18086/SSIP.html
delay
3
install
true
install_file
Micrcsoft.exe
install_folder
%AppData%

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/0x000800000002343f-11.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-1-5-21-259785868-298165991-4178590326-1000\Control Panel\International\Geo\Nation	97f70b6807192398746dd93449c2fdf4353533313c021aca4d0aa5e74f82d990.exe

Executes dropped EXE 1 IoCs

pid	Process
3368	Micrcsoft.exe

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

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/Job

T1053

pid	Process
4036	schtasks.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1496	timeout.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
3272	97f70b6807192398746dd93449c2fdf4353533313c021aca4d0aa5e74f82d990.exe
3272	97f70b6807192398746dd93449c2fdf4353533313c021aca4d0aa5e74f82d990.exe
3272	97f70b6807192398746dd93449c2fdf4353533313c021aca4d0aa5e74f82d990.exe
3272	97f70b6807192398746dd93449c2fdf4353533313c021aca4d0aa5e74f82d990.exe
3272	97f70b6807192398746dd93449c2fdf4353533313c021aca4d0aa5e74f82d990.exe
3272	97f70b6807192398746dd93449c2fdf4353533313c021aca4d0aa5e74f82d990.exe
3272	97f70b6807192398746dd93449c2fdf4353533313c021aca4d0aa5e74f82d990.exe
3272	97f70b6807192398746dd93449c2fdf4353533313c021aca4d0aa5e74f82d990.exe
3272	97f70b6807192398746dd93449c2fdf4353533313c021aca4d0aa5e74f82d990.exe
3272	97f70b6807192398746dd93449c2fdf4353533313c021aca4d0aa5e74f82d990.exe
3272	97f70b6807192398746dd93449c2fdf4353533313c021aca4d0aa5e74f82d990.exe
3272	97f70b6807192398746dd93449c2fdf4353533313c021aca4d0aa5e74f82d990.exe
3272	97f70b6807192398746dd93449c2fdf4353533313c021aca4d0aa5e74f82d990.exe
3272	97f70b6807192398746dd93449c2fdf4353533313c021aca4d0aa5e74f82d990.exe
3272	97f70b6807192398746dd93449c2fdf4353533313c021aca4d0aa5e74f82d990.exe
3272	97f70b6807192398746dd93449c2fdf4353533313c021aca4d0aa5e74f82d990.exe
3272	97f70b6807192398746dd93449c2fdf4353533313c021aca4d0aa5e74f82d990.exe
3272	97f70b6807192398746dd93449c2fdf4353533313c021aca4d0aa5e74f82d990.exe
3272	97f70b6807192398746dd93449c2fdf4353533313c021aca4d0aa5e74f82d990.exe
3272	97f70b6807192398746dd93449c2fdf4353533313c021aca4d0aa5e74f82d990.exe
3272	97f70b6807192398746dd93449c2fdf4353533313c021aca4d0aa5e74f82d990.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3272	97f70b6807192398746dd93449c2fdf4353533313c021aca4d0aa5e74f82d990.exe
Token: SeDebugPrivilege	3368	Micrcsoft.exe
Token: SeDebugPrivilege	3368	Micrcsoft.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3272 wrote to memory of 4764	3272	97f70b6807192398746dd93449c2fdf4353533313c021aca4d0aa5e74f82d990.exe	91
PID 3272 wrote to memory of 4764	3272	97f70b6807192398746dd93449c2fdf4353533313c021aca4d0aa5e74f82d990.exe	91
PID 3272 wrote to memory of 4764	3272	97f70b6807192398746dd93449c2fdf4353533313c021aca4d0aa5e74f82d990.exe	91
PID 3272 wrote to memory of 2204	3272	97f70b6807192398746dd93449c2fdf4353533313c021aca4d0aa5e74f82d990.exe	93
PID 3272 wrote to memory of 2204	3272	97f70b6807192398746dd93449c2fdf4353533313c021aca4d0aa5e74f82d990.exe	93
PID 3272 wrote to memory of 2204	3272	97f70b6807192398746dd93449c2fdf4353533313c021aca4d0aa5e74f82d990.exe	93
PID 4764 wrote to memory of 4036	4764	cmd.exe	95
PID 4764 wrote to memory of 4036	4764	cmd.exe	95
PID 4764 wrote to memory of 4036	4764	cmd.exe	95
PID 2204 wrote to memory of 1496	2204	cmd.exe	96
PID 2204 wrote to memory of 1496	2204	cmd.exe	96
PID 2204 wrote to memory of 1496	2204	cmd.exe	96
PID 2204 wrote to memory of 3368	2204	cmd.exe	97
PID 2204 wrote to memory of 3368	2204	cmd.exe	97
PID 2204 wrote to memory of 3368	2204	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\97f70b6807192398746dd93449c2fdf4353533313c021aca4d0aa5e74f82d990.exe
"C:\Users\Admin\AppData\Local\Temp\97f70b6807192398746dd93449c2fdf4353533313c021aca4d0aa5e74f82d990.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3272
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Micrcsoft" /tr '"C:\Users\Admin\AppData\Roaming\Micrcsoft.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4764
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "Micrcsoft" /tr '"C:\Users\Admin\AppData\Roaming\Micrcsoft.exe"'
    3⤵
    - Creates scheduled task(s)
    PID:4036
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp47D6.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2204
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:1496
- - C:\Users\Admin\AppData\Roaming\Micrcsoft.exe
    "C:\Users\Admin\AppData\Roaming\Micrcsoft.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:3368

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp47D6.tmp.bat

Filesize
153B

MD5
2ef836f56725e2d3a713dcca9511c0b9

SHA1
1f525f6d2b34e665837065f00d8c0190d6d36ff9

SHA256
59f7707444a5c4471e22f0b30e96a3bac7d62d7089afab0de57f8a0f87481175

SHA512
0cf0450e810b7e755e5d441232fea4a7587219e88fc16d967eadf2306d1eaa6497b13ced735a573f6fd129e39ab336d876ebb265008251faffab02f5f9f3e254

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

Filesize
65KB

MD5
3712477f2075218e74bdf987b23b578d

SHA1
95d8ef64bfc80a2cda65a4992a63083988207f67

SHA256
97f70b6807192398746dd93449c2fdf4353533313c021aca4d0aa5e74f82d990

SHA512
1a767e93ca25f0117864a5c3e1eced57a8142d5fc3d300f64f2460aac3e13ae826fc06aba195f75184651f06a76ad8f2c7adeb35ff297dc7a2ce55b9503e2e8f

Download Submit
memory/3272-0-0x0000000000E80000-0x0000000000E96000-memory.dmp

Filesize
88KB

Download
memory/3272-1-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/3272-2-0x00000000057F0000-0x0000000005800000-memory.dmp

Filesize
64KB

Download
memory/3272-3-0x00000000058A0000-0x000000000593C000-memory.dmp

Filesize
624KB

Download
memory/3272-8-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/3368-13-0x0000000074460000-0x0000000074C10000-memory.dmp

Filesize
7.7MB

Download
memory/3368-14-0x00000000051F0000-0x0000000005200000-memory.dmp

Filesize
64KB

Download
memory/3368-15-0x0000000074460000-0x0000000074C10000-memory.dmp

Filesize
7.7MB

Download
memory/3368-16-0x00000000051F0000-0x0000000005200000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads