asyncrat | 588fbdc55a74ad2224415887e51d940ba2961afedfb8adde0ce0b0ca76c7049c

General

Target
tmpfik0g_uo.exe
Size 45KB
Sample260522-yrne8set3k
SHA256 588fbdc55a74ad2224415887e51d940ba2961afedfb8adde0ce0b0ca76c7049c
MD5 cc5e281dd848430a5cd7814c6305096e
SHA1 a39c22b3f3983cfea08913f5c885a5c407bb762b
SHA512 d9b27b043d0968cda43a7e96c21bc4956cfe9d4ae0eb3839d577eae50b72a7f5e93e2a6faec5ffb39a3a255e30322d34db5dd67a1791d9a4ccece15086e812f0
SSDEEP 768:EulHJTHESwgWUK3aGmo2q9v8EbHBSj2OPI/wzjbGgX3i7U+pB5/Jw49+BDZsx:EulHJTHl42wBwK3/w3bZXS71cdsx
TLSH
T1492309003BE8C12BF2BE4F78A9F26145467AF6633A03D5491CC4519B5613FC6DA42AFE
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

labellehairflair.com:443
labellehairflair.com:80
labellehairflair.com:7797
labellehairflair.com:8707
labellehairflair.com:6620
www.labellehairflair.com:443
www.labellehairflair.com:80
www.labellehairflair.com:7797
www.labellehairflair.com:8707
www.labellehairflair.com:6620
hack.labellehairflair.com:443
hack.labellehairflair.com:80
hack.labellehairflair.com:7797
hack.labellehairflair.com:8707
hack.labellehairflair.com:6620
malware.labellehairflair.com:443
malware.labellehairflair.com:80
malware.labellehairflair.com:7797
malware.labellehairflair.com:8707
malware.labellehairflair.com:6620
revil.labellehairflair.com:443
revil.labellehairflair.com:80
revil.labellehairflair.com:7797
revil.labellehairflair.com:8707
revil.labellehairflair.com:6620
qbot.labellehairflair.com:443
qbot.labellehairflair.com:80
qbot.labellehairflair.com:7797
qbot.labellehairflair.com:8707
qbot.labellehairflair.com:6620

Mutex

9PhG0lVqctoZ

Attributes

delay
0
install
true
install_file
xpjtpt.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 2 IoCs

rat

resource	yara_rule
behavioral2/files/0x00080000000242f1-8.dat	family_asyncrat
behavioral2/memory/3308-10-0x0000000004F00000-0x0000000004F10000-memory.dmp	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-1-5-21-204488895-2999877624-296153668-1000\Control Panel\International\Geo\Nation	tmpfik0g_uo.exe

Executes dropped EXE 2 IoCs

pid	Process
3308	xpjtpt.exe
3292	xpjtpt.exe

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 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	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	xpjtpt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	xpjtpt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tmpfik0g_uo.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
1856	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
1828	schtasks.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
1700	tmpfik0g_uo.exe
1700	tmpfik0g_uo.exe
1700	tmpfik0g_uo.exe
1700	tmpfik0g_uo.exe
1700	tmpfik0g_uo.exe
1700	tmpfik0g_uo.exe
1700	tmpfik0g_uo.exe
1700	tmpfik0g_uo.exe
1700	tmpfik0g_uo.exe
1700	tmpfik0g_uo.exe
1700	tmpfik0g_uo.exe
1700	tmpfik0g_uo.exe
1700	tmpfik0g_uo.exe
1700	tmpfik0g_uo.exe
1700	tmpfik0g_uo.exe
1700	tmpfik0g_uo.exe
1700	tmpfik0g_uo.exe
1700	tmpfik0g_uo.exe
1700	tmpfik0g_uo.exe
1700	tmpfik0g_uo.exe
1700	tmpfik0g_uo.exe
1700	tmpfik0g_uo.exe
1700	tmpfik0g_uo.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1700	tmpfik0g_uo.exe
Token: SeDebugPrivilege	3308	xpjtpt.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1700 wrote to memory of 2336	1700	tmpfik0g_uo.exe	89
PID 1700 wrote to memory of 3760	1700	tmpfik0g_uo.exe	91
PID 3760 wrote to memory of 1856	3760	cmd.exe	93
PID 2336 wrote to memory of 1828	2336	cmd.exe	94
PID 3760 wrote to memory of 3292	3760	cmd.exe	104

C:\Users\Admin\AppData\Local\Temp\tmpfik0g_uo.exe
"C:\Users\Admin\AppData\Local\Temp\tmpfik0g_uo.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1700
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "xpjtpt" /tr '"C:\Users\Admin\AppData\Roaming\xpjtpt.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2336
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "xpjtpt" /tr '"C:\Users\Admin\AppData\Roaming\xpjtpt.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1828
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp624F.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3760
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:1856
- - C:\Users\Admin\AppData\Roaming\xpjtpt.exe
    "C:\Users\Admin\AppData\Roaming\xpjtpt.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3292

C:\Users\Admin\AppData\Roaming\xpjtpt.exe
"C:\Users\Admin\AppData\Roaming\xpjtpt.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:3308

Network

MITRE ATT&CK Enterprise v16

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

Exfiltration

Impact

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Downloads

tmp624F.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp624F.tmp.bat
Size 150B
SHA256 9ed38b59da6eed9c44715e511434b509153974e68ef6aad9a085e6f0080a6cd2
MD5 dca4f88e8b21e99efc217f85e7c9dffa
SHA1 c5417bcffca37bfa8974f3fb8ed092741a596ed6
SHA512 2734100ef009bc0b6edfe7b0553088842e44480d1860fd8b4a364ef883e1f4b2a79bca884bdc56d0850e2b9ae86d706baef2cdcdb2b9d16bfae9c18b9952514d
TLSH
T199C02B52A5C9FE0E3809242383FFD58C91727C593F84BB40C344404D128084CF0D9341
MD5 SHA1 SHA512 TLSH

Submit Download

xpjtpt.exe

Path C:\Users\Admin\AppData\Roaming\xpjtpt.exe
Size 45KB
SHA256 588fbdc55a74ad2224415887e51d940ba2961afedfb8adde0ce0b0ca76c7049c
MD5 cc5e281dd848430a5cd7814c6305096e
SHA1 a39c22b3f3983cfea08913f5c885a5c407bb762b
SHA512 d9b27b043d0968cda43a7e96c21bc4956cfe9d4ae0eb3839d577eae50b72a7f5e93e2a6faec5ffb39a3a255e30322d34db5dd67a1791d9a4ccece15086e812f0
SSDEEP 768:EulHJTHESwgWUK3aGmo2q9v8EbHBSj2OPI/wzjbGgX3i7U+pB5/Jw49+BDZsx:EulHJTHl42wBwK3/w3bZXS71cdsx
TLSH
T1492309003BE8C12BF2BE4F78A9F26145467AF6633A03D5491CC4519B5613FC6DA42AFE
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/1700-0-0x00000000008D0000-0x00000000008E2000-memory.dmp

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memory/1700-1-0x0000000005370000-0x0000000005380000-memory.dmp

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memory/1700-2-0x0000000005290000-0x000000000532C000-memory.dmp

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memory/3308-10-0x0000000004F00000-0x0000000004F10000-memory.dmp

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memory/3308-13-0x0000000004F00000-0x0000000004F10000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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