asyncrat | ac8c12ace3019ab9e1acccb8996c4af7e2b60e5ca955d536a4b91733f5ae0cef

General

Target
ac8c12ace3019ab9e1acccb8996c4af7e2b60e5ca955d536a4b91733f5ae0cef.exe
Size 45KB
Sample260722-vbddjsygnd
SHA256 ac8c12ace3019ab9e1acccb8996c4af7e2b60e5ca955d536a4b91733f5ae0cef
MD5 5ab07227a274c306e9c4f09bae770644
SHA1 dd5d62271872d8af370bbfd24bcec1aa1ff9edb3
SHA512 a60594d4d1315412e33f8d8803c2a8045aa4e5d19c21819abc2f067d188db2d452ef5a8311b66e89e538a19bbd047be1e9436c3b3bb266775da82c5509ddd0d4
SSDEEP 768:wuZ8pT1Uu4/cWUeT66mo2q18Ao0p54mcPIEzjbJgX3iOry3BnMI+pHBDZMx:wuZ8pT1tc2HADv4mhE3bGXSOryr+phdO
TLSH
T182233B003BE9C53BF1BE4F7898F26146867AF2632603D54A1CC451DB5623FC69A42AFD
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

default defense_evasion discovery execution asyncrat persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

wogblex.com:80
wogblex.com:22
wogblex.com:8080
wogblex.com:8880
wogblex.com:2052
wogblex.com:2082
wogblex.com:2086
wogblex.com:2095
wogblex.com:443
wogblex.com:2053
wogblex.com:2083
wogblex.com:2087
wogblex.com:2096
wogblex.com:8443
www.wogblex.com:80
www.wogblex.com:22
www.wogblex.com:8080
www.wogblex.com:8880
www.wogblex.com:2052
www.wogblex.com:2082
www.wogblex.com:2086
www.wogblex.com:2095
www.wogblex.com:443
www.wogblex.com:2053
www.wogblex.com:2083
www.wogblex.com:2087
www.wogblex.com:2096
www.wogblex.com:8443
nanocore.wogblex.com:80
nanocore.wogblex.com:22
nanocore.wogblex.com:8080
nanocore.wogblex.com:8880
nanocore.wogblex.com:2052
nanocore.wogblex.com:2082
nanocore.wogblex.com:2086
nanocore.wogblex.com:2095
nanocore.wogblex.com:443
nanocore.wogblex.com:2053
nanocore.wogblex.com:2083
nanocore.wogblex.com:2087
nanocore.wogblex.com:2096
nanocore.wogblex.com:8443
ursnif.wogblex.com:80
ursnif.wogblex.com:22
ursnif.wogblex.com:8080
ursnif.wogblex.com:8880
ursnif.wogblex.com:2052
ursnif.wogblex.com:2082
ursnif.wogblex.com:2086
ursnif.wogblex.com:2095
ursnif.wogblex.com:443
ursnif.wogblex.com:2053
ursnif.wogblex.com:2083
ursnif.wogblex.com:2087
ursnif.wogblex.com:2096
ursnif.wogblex.com:8443

Mutex

MwnFlbOVLDfA

Attributes

delay
0
install
true
install_file
uhqy.exe
install_folder
%AppData%

aes.plain

Signatures

Family: 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
behavioral1/files/0x001300000001e459-8.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-1-5-21-668679576-120646659-2289335452-1000\Control Panel\International\Geo\Nation	ac8c12ace3019ab9e1acccb8996c4af7e2b60e5ca955d536a4b91733f5ae0cef.exe

Executes dropped EXE 2 IoCs

pid	Process
400	uhqy.exe
2356	uhqy.exe

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

System Information Discovery
T1082

Executes a command shell one-liner 1 TTPs 2 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
1360	cmd.exe
3440	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 7 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	ac8c12ace3019ab9e1acccb8996c4af7e2b60e5ca955d536a4b91733f5ae0cef.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	uhqy.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	uhqy.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4736	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
4836	schtasks.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
4128	ac8c12ace3019ab9e1acccb8996c4af7e2b60e5ca955d536a4b91733f5ae0cef.exe
4128	ac8c12ace3019ab9e1acccb8996c4af7e2b60e5ca955d536a4b91733f5ae0cef.exe
4128	ac8c12ace3019ab9e1acccb8996c4af7e2b60e5ca955d536a4b91733f5ae0cef.exe
4128	ac8c12ace3019ab9e1acccb8996c4af7e2b60e5ca955d536a4b91733f5ae0cef.exe
4128	ac8c12ace3019ab9e1acccb8996c4af7e2b60e5ca955d536a4b91733f5ae0cef.exe
4128	ac8c12ace3019ab9e1acccb8996c4af7e2b60e5ca955d536a4b91733f5ae0cef.exe
4128	ac8c12ace3019ab9e1acccb8996c4af7e2b60e5ca955d536a4b91733f5ae0cef.exe
4128	ac8c12ace3019ab9e1acccb8996c4af7e2b60e5ca955d536a4b91733f5ae0cef.exe
4128	ac8c12ace3019ab9e1acccb8996c4af7e2b60e5ca955d536a4b91733f5ae0cef.exe
4128	ac8c12ace3019ab9e1acccb8996c4af7e2b60e5ca955d536a4b91733f5ae0cef.exe
4128	ac8c12ace3019ab9e1acccb8996c4af7e2b60e5ca955d536a4b91733f5ae0cef.exe
4128	ac8c12ace3019ab9e1acccb8996c4af7e2b60e5ca955d536a4b91733f5ae0cef.exe
4128	ac8c12ace3019ab9e1acccb8996c4af7e2b60e5ca955d536a4b91733f5ae0cef.exe
4128	ac8c12ace3019ab9e1acccb8996c4af7e2b60e5ca955d536a4b91733f5ae0cef.exe
4128	ac8c12ace3019ab9e1acccb8996c4af7e2b60e5ca955d536a4b91733f5ae0cef.exe
4128	ac8c12ace3019ab9e1acccb8996c4af7e2b60e5ca955d536a4b91733f5ae0cef.exe
4128	ac8c12ace3019ab9e1acccb8996c4af7e2b60e5ca955d536a4b91733f5ae0cef.exe
4128	ac8c12ace3019ab9e1acccb8996c4af7e2b60e5ca955d536a4b91733f5ae0cef.exe
4128	ac8c12ace3019ab9e1acccb8996c4af7e2b60e5ca955d536a4b91733f5ae0cef.exe
4128	ac8c12ace3019ab9e1acccb8996c4af7e2b60e5ca955d536a4b91733f5ae0cef.exe
4128	ac8c12ace3019ab9e1acccb8996c4af7e2b60e5ca955d536a4b91733f5ae0cef.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4128	ac8c12ace3019ab9e1acccb8996c4af7e2b60e5ca955d536a4b91733f5ae0cef.exe
Token: SeDebugPrivilege	400	uhqy.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4128 wrote to memory of 3440	4128	ac8c12ace3019ab9e1acccb8996c4af7e2b60e5ca955d536a4b91733f5ae0cef.exe	84
PID 4128 wrote to memory of 1360	4128	ac8c12ace3019ab9e1acccb8996c4af7e2b60e5ca955d536a4b91733f5ae0cef.exe	86
PID 1360 wrote to memory of 4736	1360	cmd.exe	88
PID 3440 wrote to memory of 4836	3440	cmd.exe	89
PID 1360 wrote to memory of 2356	1360	cmd.exe	92

C:\Users\Admin\AppData\Local\Temp\ac8c12ace3019ab9e1acccb8996c4af7e2b60e5ca955d536a4b91733f5ae0cef.exe
"C:\Users\Admin\AppData\Local\Temp\ac8c12ace3019ab9e1acccb8996c4af7e2b60e5ca955d536a4b91733f5ae0cef.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4128
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "uhqy" /tr '"C:\Users\Admin\AppData\Roaming\uhqy.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3440
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "uhqy" /tr '"C:\Users\Admin\AppData\Roaming\uhqy.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4836
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp5CB1.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1360
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4736
- - C:\Users\Admin\AppData\Roaming\uhqy.exe
    "C:\Users\Admin\AppData\Roaming\uhqy.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2356

C:\Users\Admin\AppData\Roaming\uhqy.exe
"C:\Users\Admin\AppData\Roaming\uhqy.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:400

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Windows Command Shell

1

T1059.003

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

Exfiltration

Impact

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Downloads

tmp5CB1.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp5CB1.tmp.bat
Size 148B
SHA256 9c904cac0087602273babda0ad0901dec8b684ef07c96a8fd75fa3af2f13f2be
MD5 d2d915b898de8d695edb3ab12df80138
SHA1 876623aebd9a4fd4d65c8ecacad7fce8dd107f00
SHA512 363f75127188306db1f99bd6aa60fd85a3a1a9016c1ec6cf47cb6beaeb8c1f45704b2a02db11eeb27bc105bbd99cb3908c5bba96f3b7468e8a690397e743262d
TLSH
T1BDC02B4791C5EA0F3909245302FAE98DA2726C1F3F84BB10C304401F1280849F0D9386
MD5 SHA1 SHA512 TLSH

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uhqy.exe

Path C:\Users\Admin\AppData\Roaming\uhqy.exe
Size 45KB
SHA256 ac8c12ace3019ab9e1acccb8996c4af7e2b60e5ca955d536a4b91733f5ae0cef
MD5 5ab07227a274c306e9c4f09bae770644
SHA1 dd5d62271872d8af370bbfd24bcec1aa1ff9edb3
SHA512 a60594d4d1315412e33f8d8803c2a8045aa4e5d19c21819abc2f067d188db2d452ef5a8311b66e89e538a19bbd047be1e9436c3b3bb266775da82c5509ddd0d4
SSDEEP 768:wuZ8pT1Uu4/cWUeT66mo2q18Ao0p54mcPIEzjbJgX3iOry3BnMI+pHBDZMx:wuZ8pT1tc2HADv4mhE3bGXSOryr+phdO
TLSH
T182233B003BE9C53BF1BE4F7898F26146867AF2632603D54A1CC451DB5623FC69A42AFD
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/400-10-0x0000000004940000-0x0000000004950000-memory.dmp

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memory/400-13-0x0000000004940000-0x0000000004950000-memory.dmp

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memory/4128-0-0x00000000008C0000-0x00000000008D2000-memory.dmp

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memory/4128-1-0x0000000005480000-0x0000000005490000-memory.dmp

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memory/4128-2-0x0000000005360000-0x00000000053FC000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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