asyncrat | 0430110381976669226247e7c5403ac61f4d419c7fa223231ce5c9af7cd3bbf1

General

Target

54c5be1e2056c9d591b7e35853ca4a84.exe
Size

585KB
MD5

54c5be1e2056c9d591b7e35853ca4a84
SHA1

c00bd4d0c3b6060dde5095c4c6938badf1b29eda
SHA256

0430110381976669226247e7c5403ac61f4d419c7fa223231ce5c9af7cd3bbf1
SHA512

8d6e219729f8a981c94b7e8d7b5f2bf764367b096381abaa3033171c590587b00ced309e641a9955f60c3836fc366c91bfd90414216373cd91e66ab2f24a4c75
SSDEEP

6144:5jrbYSqQ/Gq/lqLrBOOfd0tV9D8DT/XELB:5nb/xq0V9ATfWB

Score

10^/10

asyncrat wire$$$$$$$$rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

WIRE$$$$$$$$

C2

severdops.ddns.net:6204

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
true
install_file
iconfx.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

Processes:

resource	yara_rule
behavioral2/memory/4460-7-0x0000000000400000-0x0000000000412000-memory.dmp	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:

54c5be1e2056c9d591b7e35853ca4a84.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\Control Panel\International\Geo\Nation	54c5be1e2056c9d591b7e35853ca4a84.exe

Executes dropped EXE 2 IoCs

Processes:

iconfx.exeiconfx.exe

pid process

212 iconfx.exe
2480 iconfx.exe

pid	process
212	iconfx.exe
2480	iconfx.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

54c5be1e2056c9d591b7e35853ca4a84.exeiconfx.exe

description	pid	process	target process
PID 1868 set thread context of 4460	1868	54c5be1e2056c9d591b7e35853ca4a84.exe	54c5be1e2056c9d591b7e35853ca4a84.exe
PID 212 set thread context of 2480	212	iconfx.exe	iconfx.exe

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

System Information Discovery
T1082
Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

4628 1868 WerFault.exe 54c5be1e2056c9d591b7e35853ca4a84.exe
4544 212 WerFault.exe iconfx.exe
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

Processes:

schtasks.exe

pid process

4576 schtasks.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

3252 timeout.exe

pid	pid_target	process	target process
4628	1868	WerFault.exe	54c5be1e2056c9d591b7e35853ca4a84.exe
4544	212	WerFault.exe	iconfx.exe

pid	process
4576	schtasks.exe

pid	process
3252	timeout.exe

Suspicious behavior: EnumeratesProcesses 24 IoCs

Processes:

54c5be1e2056c9d591b7e35853ca4a84.exe

pid	process
4460	54c5be1e2056c9d591b7e35853ca4a84.exe
4460	54c5be1e2056c9d591b7e35853ca4a84.exe
4460	54c5be1e2056c9d591b7e35853ca4a84.exe
4460	54c5be1e2056c9d591b7e35853ca4a84.exe
4460	54c5be1e2056c9d591b7e35853ca4a84.exe
4460	54c5be1e2056c9d591b7e35853ca4a84.exe
4460	54c5be1e2056c9d591b7e35853ca4a84.exe
4460	54c5be1e2056c9d591b7e35853ca4a84.exe
4460	54c5be1e2056c9d591b7e35853ca4a84.exe
4460	54c5be1e2056c9d591b7e35853ca4a84.exe
4460	54c5be1e2056c9d591b7e35853ca4a84.exe
4460	54c5be1e2056c9d591b7e35853ca4a84.exe
4460	54c5be1e2056c9d591b7e35853ca4a84.exe
4460	54c5be1e2056c9d591b7e35853ca4a84.exe
4460	54c5be1e2056c9d591b7e35853ca4a84.exe
4460	54c5be1e2056c9d591b7e35853ca4a84.exe
4460	54c5be1e2056c9d591b7e35853ca4a84.exe
4460	54c5be1e2056c9d591b7e35853ca4a84.exe
4460	54c5be1e2056c9d591b7e35853ca4a84.exe
4460	54c5be1e2056c9d591b7e35853ca4a84.exe
4460	54c5be1e2056c9d591b7e35853ca4a84.exe
4460	54c5be1e2056c9d591b7e35853ca4a84.exe
4460	54c5be1e2056c9d591b7e35853ca4a84.exe
4460	54c5be1e2056c9d591b7e35853ca4a84.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

54c5be1e2056c9d591b7e35853ca4a84.exe54c5be1e2056c9d591b7e35853ca4a84.exeiconfx.exeiconfx.exe

description	pid	process
Token: SeDebugPrivilege	1868	54c5be1e2056c9d591b7e35853ca4a84.exe
Token: SeDebugPrivilege	4460	54c5be1e2056c9d591b7e35853ca4a84.exe
Token: SeDebugPrivilege	212	iconfx.exe
Token: SeDebugPrivilege	2480	iconfx.exe

Suspicious use of WriteProcessMemory 31 IoCs

Processes:

54c5be1e2056c9d591b7e35853ca4a84.exe54c5be1e2056c9d591b7e35853ca4a84.execmd.execmd.exeiconfx.exe

description	pid	process	target process
PID 1868 wrote to memory of 4460	1868	54c5be1e2056c9d591b7e35853ca4a84.exe	54c5be1e2056c9d591b7e35853ca4a84.exe
PID 1868 wrote to memory of 4460	1868	54c5be1e2056c9d591b7e35853ca4a84.exe	54c5be1e2056c9d591b7e35853ca4a84.exe
PID 1868 wrote to memory of 4460	1868	54c5be1e2056c9d591b7e35853ca4a84.exe	54c5be1e2056c9d591b7e35853ca4a84.exe
PID 1868 wrote to memory of 4460	1868	54c5be1e2056c9d591b7e35853ca4a84.exe	54c5be1e2056c9d591b7e35853ca4a84.exe
PID 1868 wrote to memory of 4460	1868	54c5be1e2056c9d591b7e35853ca4a84.exe	54c5be1e2056c9d591b7e35853ca4a84.exe
PID 1868 wrote to memory of 4460	1868	54c5be1e2056c9d591b7e35853ca4a84.exe	54c5be1e2056c9d591b7e35853ca4a84.exe
PID 1868 wrote to memory of 4460	1868	54c5be1e2056c9d591b7e35853ca4a84.exe	54c5be1e2056c9d591b7e35853ca4a84.exe
PID 1868 wrote to memory of 4460	1868	54c5be1e2056c9d591b7e35853ca4a84.exe	54c5be1e2056c9d591b7e35853ca4a84.exe
PID 4460 wrote to memory of 4420	4460	54c5be1e2056c9d591b7e35853ca4a84.exe	cmd.exe
PID 4460 wrote to memory of 4420	4460	54c5be1e2056c9d591b7e35853ca4a84.exe	cmd.exe
PID 4460 wrote to memory of 4420	4460	54c5be1e2056c9d591b7e35853ca4a84.exe	cmd.exe
PID 4460 wrote to memory of 4256	4460	54c5be1e2056c9d591b7e35853ca4a84.exe	cmd.exe
PID 4460 wrote to memory of 4256	4460	54c5be1e2056c9d591b7e35853ca4a84.exe	cmd.exe
PID 4460 wrote to memory of 4256	4460	54c5be1e2056c9d591b7e35853ca4a84.exe	cmd.exe
PID 4420 wrote to memory of 4576	4420	cmd.exe	schtasks.exe
PID 4420 wrote to memory of 4576	4420	cmd.exe	schtasks.exe
PID 4420 wrote to memory of 4576	4420	cmd.exe	schtasks.exe
PID 4256 wrote to memory of 3252	4256	cmd.exe	timeout.exe
PID 4256 wrote to memory of 3252	4256	cmd.exe	timeout.exe
PID 4256 wrote to memory of 3252	4256	cmd.exe	timeout.exe
PID 4256 wrote to memory of 212	4256	cmd.exe	iconfx.exe
PID 4256 wrote to memory of 212	4256	cmd.exe	iconfx.exe
PID 4256 wrote to memory of 212	4256	cmd.exe	iconfx.exe
PID 212 wrote to memory of 2480	212	iconfx.exe	iconfx.exe
PID 212 wrote to memory of 2480	212	iconfx.exe	iconfx.exe
PID 212 wrote to memory of 2480	212	iconfx.exe	iconfx.exe
PID 212 wrote to memory of 2480	212	iconfx.exe	iconfx.exe
PID 212 wrote to memory of 2480	212	iconfx.exe	iconfx.exe
PID 212 wrote to memory of 2480	212	iconfx.exe	iconfx.exe
PID 212 wrote to memory of 2480	212	iconfx.exe	iconfx.exe
PID 212 wrote to memory of 2480	212	iconfx.exe	iconfx.exe

C:\Users\Admin\AppData\Local\Temp\54c5be1e2056c9d591b7e35853ca4a84.exe
"C:\Users\Admin\AppData\Local\Temp\54c5be1e2056c9d591b7e35853ca4a84.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1868

C:\Users\Admin\AppData\Local\Temp\54c5be1e2056c9d591b7e35853ca4a84.exe
"C:\Users\Admin\AppData\Local\Temp\54c5be1e2056c9d591b7e35853ca4a84.exe"
2⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4460

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "iconfx" /tr '"C:\Users\Admin\AppData\Roaming\iconfx.exe"' & exit
3⤵
- Suspicious use of WriteProcessMemory
PID:4420

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "iconfx" /tr '"C:\Users\Admin\AppData\Roaming\iconfx.exe"'
4⤵
- Creates scheduled task(s)
PID:4576

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpCA55.tmp.bat""
3⤵
- Suspicious use of WriteProcessMemory
PID:4256

C:\Windows\SysWOW64\timeout.exe
timeout 3
4⤵
- Delays execution with timeout.exe
PID:3252

C:\Users\Admin\AppData\Roaming\iconfx.exe
"C:\Users\Admin\AppData\Roaming\iconfx.exe"
4⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:212

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 212 -s 1092
5⤵
- Program crash
PID:4544

C:\Users\Admin\AppData\Roaming\iconfx.exe
"C:\Users\Admin\AppData\Roaming\iconfx.exe"
5⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2480

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1868 -s 1076
2⤵
- Program crash
PID:4628

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1868 -ip 1868
1⤵
PID:3760

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 212 -ip 212
1⤵
PID:2256

Network

MITRE ATT&CK Matrix ATT&CK v13

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

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpCA55.tmp.bat
Filesize
150B

MD5
0af051d6ca1db87f6ae60f09d16cb890

SHA1
1d0393fb6ca808211984daadbc8738979ee9a08b

SHA256
a7dbd51ca771f54bd557c987c2f94810dad1aed8b17b57cbcaf599707c1a31a3

SHA512
bb5075373e3aaeeab9c90c9e4fb6051c6677d8d4ff13831ad8e09e432733afe3cbc97ffdae430db1145f3cc6eace28f2b226cfe91063c96313fec7b3d83f4ea4

Download Submit
C:\Users\Admin\AppData\Roaming\iconfx.exe
Filesize
92KB

MD5
61bfcc6a548d18847ea234a1682e34be

SHA1
722e3be5062c5c8177916b946861378a08224522

SHA256
5e4d8ad4636bc4d386f28c118c53c7c432fd4ced18113fd3614bc87bf3cf8399

SHA512
b4adff2966a4c2753eb8a865d41579a58a41d7015e311c679218a758be72236bf177db5e1d3fe4b5a70b3a6530e3e652cbad99684f4abfe1813e9435646f4882

Download Submit
C:\Users\Admin\AppData\Roaming\iconfx.exe
Filesize
95KB

MD5
264d065f0366cb166a6cf4c043deafdf

SHA1
5ab83652b30c98a5d7d326de64e89942f09cf3d2

SHA256
d8624e57d47994f4e776525ffc55a55316a88f7ac829d5b2ae1176d88ad0e0ef

SHA512
7ef803a0359b95c2cbaf137c03d6b99f66d0d62d8a79c25e14d65710d0e5e35849a043f85fc576502166f22d9633720caf608ca11d8ffb83599e69aafe4cefbd

Download Submit
C:\Users\Admin\AppData\Roaming\iconfx.exe
Filesize
585KB

MD5
54c5be1e2056c9d591b7e35853ca4a84

SHA1
c00bd4d0c3b6060dde5095c4c6938badf1b29eda

SHA256
0430110381976669226247e7c5403ac61f4d419c7fa223231ce5c9af7cd3bbf1

SHA512
8d6e219729f8a981c94b7e8d7b5f2bf764367b096381abaa3033171c590587b00ced309e641a9955f60c3836fc366c91bfd90414216373cd91e66ab2f24a4c75

Download Submit
memory/212-30-0x0000000074810000-0x0000000074FC0000-memory.dmp

Filesize
7.7MB

Download
memory/212-25-0x00000000056C0000-0x00000000056D0000-memory.dmp

Filesize
64KB

Download
memory/212-24-0x0000000074810000-0x0000000074FC0000-memory.dmp

Filesize
7.7MB

Download
memory/1868-6-0x0000000004F90000-0x0000000004FA8000-memory.dmp

Filesize
96KB

Download
memory/1868-3-0x0000000004EF0000-0x0000000004F82000-memory.dmp

Filesize
584KB

Download
memory/1868-1-0x0000000074810000-0x0000000074FC0000-memory.dmp

Filesize
7.7MB

Download
memory/1868-11-0x0000000074810000-0x0000000074FC0000-memory.dmp

Filesize
7.7MB

Download
memory/1868-12-0x00000000050E0000-0x00000000050F0000-memory.dmp

Filesize
64KB

Download
memory/1868-8-0x0000000005000000-0x0000000005008000-memory.dmp

Filesize
32KB

Download
memory/1868-2-0x00000000055A0000-0x0000000005B44000-memory.dmp

Filesize
5.6MB

Download
memory/1868-4-0x00000000050E0000-0x00000000050F0000-memory.dmp

Filesize
64KB

Download
memory/1868-20-0x0000000074810000-0x0000000074FC0000-memory.dmp

Filesize
7.7MB

Download
memory/1868-0-0x0000000000470000-0x0000000000506000-memory.dmp

Filesize
600KB

Download
memory/1868-5-0x00000000050F0000-0x000000000518C000-memory.dmp

Filesize
624KB

Download
memory/2480-29-0x0000000074810000-0x0000000074FC0000-memory.dmp

Filesize
7.7MB

Download
memory/2480-31-0x0000000004F40000-0x0000000004F50000-memory.dmp

Filesize
64KB

Download
memory/2480-32-0x0000000074810000-0x0000000074FC0000-memory.dmp

Filesize
7.7MB

Download
memory/2480-33-0x0000000004F40000-0x0000000004F50000-memory.dmp

Filesize
64KB

Download
memory/4460-7-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/4460-18-0x0000000074810000-0x0000000074FC0000-memory.dmp

Filesize
7.7MB

Download
memory/4460-13-0x00000000056C0000-0x00000000056D0000-memory.dmp

Filesize
64KB

Download
memory/4460-9-0x0000000074810000-0x0000000074FC0000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads