asyncrat | 0e43ddda43c57d175c94fb57d1e8501d27d8c54c02c5ebba43f01516eadeec3c

Analysis

max time kernel
120s
max time network
143s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
30-12-2024 10:37

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General

Target

Payment-Order #24560274 for 8,380 USD.exe
Size

392KB
MD5

eac2017286abefbd21b28e7f9fcab248
SHA1

02f90ba750bf3801e286ecfbf3467110f8b2ef94
SHA256

e8f6dc455cea42a08feb8fcf5a34928864d537ec5ec905576cee58c9fabd6a5f
SHA512

fa0a14b1bfce0fac1bbb1488f319dd864b9a94e784a6a637907d3bd31dddb80043de71ee582def13e72b9a4c2490c1738fa8d676feb3bc519d26bc75936db48b
SSDEEP

12288:OaoO2yd67Jss86xlfLfC7hgooOK6YQMhUZC9WpVyi:OnV8gooOeQtrl

Score

10^/10

asyncrat xworm default discovery evasion execution rat spyware stealer trojan

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

91.223.3.156:7707

91.223.3.156:8808

Mutex

TcNC0kSWrpnZ

Attributes

delay
3
install
false
install_folder
%AppData%

aes.plain

Extracted

Family

xworm

Version

3.1

212.23.222.198:7000

Mutex

Ihzd02cPcnJ09l8B

Attributes

install_file
USB.exe

aes.plain

Signatures

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

Detect Xworm Payload 5 IoCs

resource	yara_rule
behavioral1/memory/1828-98-0x0000000000400000-0x000000000040E000-memory.dmp	family_xworm
behavioral1/memory/1828-99-0x0000000000400000-0x000000000040E000-memory.dmp	family_xworm
behavioral1/memory/1828-100-0x0000000000400000-0x000000000040E000-memory.dmp	family_xworm
behavioral1/memory/1828-96-0x0000000000400000-0x000000000040E000-memory.dmp	family_xworm
behavioral1/memory/1828-93-0x0000000000400000-0x000000000040E000-memory.dmp	family_xworm

UAC bypass 3 TTPs 1 IoCs

evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	Payment-Order #24560274 for 8,380 USD.exe

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Xworm family
xworm

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Start PowerShell.

execution

PowerShell

T1059.001

pid	Process
2900	powershell.exe
2692	powershell.exe

Executes dropped EXE 1 IoCs

pid	Process
2204	nngrms.exe

Loads dropped DLL 6 IoCs

pid	Process
2900	powershell.exe
1768	WerFault.exe
1768	WerFault.exe
1768	WerFault.exe
1768	WerFault.exe
1768	WerFault.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	Payment-Order #24560274 for 8,380 USD.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	Payment-Order #24560274 for 8,380 USD.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1860 set thread context of 2372	1860	Payment-Order #24560274 for 8,380 USD.exe	30
PID 2204 set thread context of 1828	2204	nngrms.exe	39

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 4 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	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regasm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	installutil.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2692	powershell.exe
2900	powershell.exe
2900	powershell.exe
2900	powershell.exe
2372	installutil.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2692	powershell.exe
Token: SeDebugPrivilege	2372	installutil.exe
Token: SeDebugPrivilege	2900	powershell.exe
Token: SeDebugPrivilege	1828	regasm.exe

Suspicious use of WriteProcessMemory 45 IoCs

description	pid	Process	procid_target
PID 1860 wrote to memory of 2692	1860	Payment-Order #24560274 for 8,380 USD.exe	28
PID 1860 wrote to memory of 2692	1860	Payment-Order #24560274 for 8,380 USD.exe	28
PID 1860 wrote to memory of 2692	1860	Payment-Order #24560274 for 8,380 USD.exe	28
PID 1860 wrote to memory of 2372	1860	Payment-Order #24560274 for 8,380 USD.exe	30
PID 1860 wrote to memory of 2372	1860	Payment-Order #24560274 for 8,380 USD.exe	30
PID 1860 wrote to memory of 2372	1860	Payment-Order #24560274 for 8,380 USD.exe	30
PID 1860 wrote to memory of 2372	1860	Payment-Order #24560274 for 8,380 USD.exe	30
PID 1860 wrote to memory of 2372	1860	Payment-Order #24560274 for 8,380 USD.exe	30
PID 1860 wrote to memory of 2372	1860	Payment-Order #24560274 for 8,380 USD.exe	30
PID 1860 wrote to memory of 2372	1860	Payment-Order #24560274 for 8,380 USD.exe	30
PID 1860 wrote to memory of 2372	1860	Payment-Order #24560274 for 8,380 USD.exe	30
PID 1860 wrote to memory of 2372	1860	Payment-Order #24560274 for 8,380 USD.exe	30
PID 1860 wrote to memory of 2372	1860	Payment-Order #24560274 for 8,380 USD.exe	30
PID 1860 wrote to memory of 2372	1860	Payment-Order #24560274 for 8,380 USD.exe	30
PID 1860 wrote to memory of 2372	1860	Payment-Order #24560274 for 8,380 USD.exe	30
PID 1860 wrote to memory of 2888	1860	Payment-Order #24560274 for 8,380 USD.exe	31
PID 1860 wrote to memory of 2888	1860	Payment-Order #24560274 for 8,380 USD.exe	31
PID 1860 wrote to memory of 2888	1860	Payment-Order #24560274 for 8,380 USD.exe	31
PID 2372 wrote to memory of 2540	2372	installutil.exe	35
PID 2372 wrote to memory of 2540	2372	installutil.exe	35
PID 2372 wrote to memory of 2540	2372	installutil.exe	35
PID 2372 wrote to memory of 2540	2372	installutil.exe	35
PID 2540 wrote to memory of 2900	2540	cmd.exe	37
PID 2540 wrote to memory of 2900	2540	cmd.exe	37
PID 2540 wrote to memory of 2900	2540	cmd.exe	37
PID 2540 wrote to memory of 2900	2540	cmd.exe	37
PID 2900 wrote to memory of 2204	2900	powershell.exe	38
PID 2900 wrote to memory of 2204	2900	powershell.exe	38
PID 2900 wrote to memory of 2204	2900	powershell.exe	38
PID 2900 wrote to memory of 2204	2900	powershell.exe	38
PID 2204 wrote to memory of 1828	2204	nngrms.exe	39
PID 2204 wrote to memory of 1828	2204	nngrms.exe	39
PID 2204 wrote to memory of 1828	2204	nngrms.exe	39
PID 2204 wrote to memory of 1828	2204	nngrms.exe	39
PID 2204 wrote to memory of 1828	2204	nngrms.exe	39
PID 2204 wrote to memory of 1828	2204	nngrms.exe	39
PID 2204 wrote to memory of 1828	2204	nngrms.exe	39
PID 2204 wrote to memory of 1828	2204	nngrms.exe	39
PID 2204 wrote to memory of 1828	2204	nngrms.exe	39
PID 2204 wrote to memory of 1828	2204	nngrms.exe	39
PID 2204 wrote to memory of 1828	2204	nngrms.exe	39
PID 2204 wrote to memory of 1828	2204	nngrms.exe	39
PID 2204 wrote to memory of 1768	2204	nngrms.exe	40
PID 2204 wrote to memory of 1768	2204	nngrms.exe	40
PID 2204 wrote to memory of 1768	2204	nngrms.exe	40

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	Payment-Order #24560274 for 8,380 USD.exe

C:\Users\Admin\AppData\Local\Temp\Payment-Order #24560274 for 8,380 USD.exe
"C:\Users\Admin\AppData\Local\Temp\Payment-Order #24560274 for 8,380 USD.exe"
1⤵
- UAC bypass
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1860
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Payment-Order #24560274 for 8,380 USD.exe" -Force
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2692
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2372
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c start /b powershell –ExecutionPolicy Bypass Start-Process -FilePath '"C:\Users\Admin\AppData\Local\Temp\nngrms.exe"' & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2540
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell –ExecutionPolicy Bypass Start-Process -FilePath '"C:\Users\Admin\AppData\Local\Temp\nngrms.exe"'
      4⤵
      Command and Scripting Interpreter: PowerShell
      Loads dropped DLL
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:2900
    - - C:\Users\Admin\AppData\Local\Temp\nngrms.exe
        
        "C:\Users\Admin\AppData\Local\Temp\nngrms.exe"
        5⤵
        Executes dropped EXE
        Suspicious use of SetThreadContext
        Suspicious use of WriteProcessMemory
        
        PID:2204
      - C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
        
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
        6⤵
        System Location Discovery: System Language Discovery
        Suspicious use of AdjustPrivilegeToken
        
        PID:1828
      - C:\Windows\system32\WerFault.exe
        
        C:\Windows\system32\WerFault.exe -u -p 2204 -s 620
        6⤵
        Loads dropped DLL
        
        PID:1768
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 1860 -s 812
  2⤵
  PID:2888

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Cab389F.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar53A1.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
C:\Users\Admin\AppData\Local\Temp\nngrms.exe

Filesize
380KB

MD5
dba8a00401ba0799432567652b35d92d

SHA1
1e4ef79e14c88ca0b019e11ca761684271d0ad5d

SHA256
504515e3e813c8c49895773d464e372ad44c052ad626e1f128a3db05f017f051

SHA512
f426d455f07dac29fc6acc03daacf8ffd785bd09907f0964c82bb7f236af3d2f9fe9cef95644f3a91432311a001203b48befc4d2a984fac2584729425b3d3d2f

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\QUHKMHOZFK3BL2QELO83.temp

Filesize
7KB

MD5
1ef191095577fc0e1a92d4e40e0e2da9

SHA1
3df6d5187f839fe0cecb8ac6d081ff79aa00340c

SHA256
03bb451e6127013327c5bab76f43f7c194b7e5a64f4d3351f49837655802af7a

SHA512
c3cefe44f25c19405d6d88b27c13099c469aba3f2167f3b9e5ee441ec5b304c35f3db9953392c9636163011a446eb186d4d513e3c50bf335f3b8cd9ff9e23883

Download Submit
memory/1828-98-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/1828-100-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/1828-108-0x00000000059A0000-0x0000000005A04000-memory.dmp

Filesize
400KB

Download
memory/1828-107-0x0000000005ED0000-0x0000000005F5C000-memory.dmp

Filesize
560KB

Download
memory/1828-106-0x0000000005C10000-0x0000000005C92000-memory.dmp

Filesize
520KB

Download
memory/1828-91-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/1828-93-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/1828-96-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/1828-97-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1828-89-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/1828-99-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/1860-23-0x000007FEF5230000-0x000007FEF5C1C000-memory.dmp

Filesize
9.9MB

Download
memory/1860-0-0x000007FEF5233000-0x000007FEF5234000-memory.dmp

Filesize
4KB

Download
memory/1860-2-0x00000000001D0000-0x0000000000234000-memory.dmp

Filesize
400KB

Download
memory/1860-3-0x000007FEF5230000-0x000007FEF5C1C000-memory.dmp

Filesize
9.9MB

Download
memory/1860-1-0x0000000000160000-0x00000000001C4000-memory.dmp

Filesize
400KB

Download
memory/2204-87-0x0000000000A00000-0x0000000000A62000-memory.dmp

Filesize
392KB

Download
memory/2204-88-0x0000000000590000-0x00000000005F0000-memory.dmp

Filesize
384KB

Download
memory/2372-15-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2372-21-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2372-61-0x00000000005B0000-0x00000000005BA000-memory.dmp

Filesize
40KB

Download
memory/2372-60-0x0000000000B70000-0x0000000000BB0000-memory.dmp

Filesize
256KB

Download
memory/2372-41-0x0000000005A60000-0x0000000005AFC000-memory.dmp

Filesize
624KB

Download
memory/2372-17-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2372-11-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2372-20-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2372-13-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2372-19-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2372-62-0x0000000005D90000-0x0000000005DF2000-memory.dmp

Filesize
392KB

Download
memory/2372-22-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2692-9-0x000000001B660000-0x000000001B942000-memory.dmp

Filesize
2.9MB

Download
memory/2692-8-0x0000000002CF0000-0x0000000002D70000-memory.dmp

Filesize
512KB

Download
memory/2692-10-0x0000000002860000-0x0000000002868000-memory.dmp

Filesize
32KB

Download