asyncrat | c891493c98f76e82e18c0e57e51b96fe8da86b086d67632e2495a793d3298bf2

Analysis

max time kernel
136s
max time network
150s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
07-11-2024 20:01

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General

Target

ChromeSetup.exe
Size

930KB
MD5

de04168171981a90f56a126ec055ba19
SHA1

766704b6e12a7db436663eb7e287160e736979b7
SHA256

c891493c98f76e82e18c0e57e51b96fe8da86b086d67632e2495a793d3298bf2
SHA512

784f4b6954a56e2f09f3b3f1d29ae6d1ad14c814f3aad6391972654c398c68bcf7745902c368cbfcb8778f16cb33aa62210c937d48e6d8876d567fcd2a657013
SSDEEP

12288:lS6vgPZN3V4smWPc7H3/BPyf13SFyIz8VOHa8ASSMCFFi0mWWaos2Z8kM+:06vqtcDZPyf13WyODSMyc08aoz8kM

Score

10^/10

asyncrat nightingale collection credential_access discovery execution persistence rat stealer

Malware Config

Signatures

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

Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 IoCs

Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

persistence

Active Setup

T1547.014

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Active Setup\Installed Components	explorer.exe

Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
credential_access stealer

Credentials In Files
T1552.001

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2296	powershell.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
5	pastebin.com
6	pastebin.com

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
8	ip-api.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2552 set thread context of 2912	2552	ChromeSetup.exe	30

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	ChromeSetup.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MSBuild.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000_Classes\Local Settings	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell	explorer.exe

Suspicious behavior: EnumeratesProcesses 18 IoCs

pid	Process
2552	ChromeSetup.exe
2552	ChromeSetup.exe
2552	ChromeSetup.exe
2296	powershell.exe
2308	powershell.exe
2912	MSBuild.exe
2912	MSBuild.exe
2912	MSBuild.exe
2912	MSBuild.exe
2912	MSBuild.exe
2912	MSBuild.exe
2912	MSBuild.exe
2912	MSBuild.exe
2912	MSBuild.exe
2912	MSBuild.exe
2912	MSBuild.exe
2912	MSBuild.exe
2912	MSBuild.exe

Suspicious use of AdjustPrivilegeToken 18 IoCs

description	pid	Process
Token: SeDebugPrivilege	2552	ChromeSetup.exe
Token: SeDebugPrivilege	2912	MSBuild.exe
Token: SeDebugPrivilege	2296	powershell.exe
Token: SeDebugPrivilege	2308	powershell.exe
Token: SeShutdownPrivilege	2996	explorer.exe
Token: SeShutdownPrivilege	2996	explorer.exe
Token: SeShutdownPrivilege	2996	explorer.exe
Token: SeShutdownPrivilege	2996	explorer.exe
Token: SeShutdownPrivilege	2996	explorer.exe
Token: SeShutdownPrivilege	2996	explorer.exe
Token: SeShutdownPrivilege	2996	explorer.exe
Token: SeShutdownPrivilege	2996	explorer.exe
Token: 33	2100	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	2100	AUDIODG.EXE
Token: 33	2100	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	2100	AUDIODG.EXE
Token: SeShutdownPrivilege	2996	explorer.exe
Token: SeShutdownPrivilege	2996	explorer.exe

Suspicious use of FindShellTrayWindow 26 IoCs

pid	Process
2996	explorer.exe
2996	explorer.exe
2996	explorer.exe
2996	explorer.exe
2996	explorer.exe
2996	explorer.exe
2996	explorer.exe
2996	explorer.exe
2996	explorer.exe
2996	explorer.exe
2996	explorer.exe
2996	explorer.exe
2996	explorer.exe
2996	explorer.exe
2996	explorer.exe
2996	explorer.exe
2996	explorer.exe
2996	explorer.exe
2996	explorer.exe
2996	explorer.exe
2996	explorer.exe
2996	explorer.exe
2996	explorer.exe
2996	explorer.exe
2996	explorer.exe
2996	explorer.exe

Suspicious use of SendNotifyMessage 16 IoCs

pid	Process
2996	explorer.exe
2996	explorer.exe
2996	explorer.exe
2996	explorer.exe
2996	explorer.exe
2996	explorer.exe
2996	explorer.exe
2996	explorer.exe
2996	explorer.exe
2996	explorer.exe
2996	explorer.exe
2996	explorer.exe
2996	explorer.exe
2996	explorer.exe
2996	explorer.exe
2996	explorer.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2552 wrote to memory of 2912	2552	ChromeSetup.exe	30
PID 2552 wrote to memory of 2912	2552	ChromeSetup.exe	30
PID 2552 wrote to memory of 2912	2552	ChromeSetup.exe	30
PID 2552 wrote to memory of 2912	2552	ChromeSetup.exe	30
PID 2552 wrote to memory of 2912	2552	ChromeSetup.exe	30
PID 2552 wrote to memory of 2912	2552	ChromeSetup.exe	30
PID 2552 wrote to memory of 2912	2552	ChromeSetup.exe	30
PID 2552 wrote to memory of 2912	2552	ChromeSetup.exe	30
PID 2552 wrote to memory of 2912	2552	ChromeSetup.exe	30
PID 2552 wrote to memory of 2912	2552	ChromeSetup.exe	30
PID 2552 wrote to memory of 2912	2552	ChromeSetup.exe	30
PID 2552 wrote to memory of 2912	2552	ChromeSetup.exe	30
PID 2912 wrote to memory of 2296	2912	MSBuild.exe	33
PID 2912 wrote to memory of 2296	2912	MSBuild.exe	33
PID 2912 wrote to memory of 2296	2912	MSBuild.exe	33
PID 2912 wrote to memory of 2296	2912	MSBuild.exe	33
PID 2912 wrote to memory of 2296	2912	MSBuild.exe	33
PID 2912 wrote to memory of 2296	2912	MSBuild.exe	33
PID 2912 wrote to memory of 2296	2912	MSBuild.exe	33
PID 2912 wrote to memory of 2308	2912	MSBuild.exe	35
PID 2912 wrote to memory of 2308	2912	MSBuild.exe	35
PID 2912 wrote to memory of 2308	2912	MSBuild.exe	35
PID 2912 wrote to memory of 2308	2912	MSBuild.exe	35
PID 2912 wrote to memory of 2308	2912	MSBuild.exe	35
PID 2912 wrote to memory of 2308	2912	MSBuild.exe	35
PID 2912 wrote to memory of 2308	2912	MSBuild.exe	35
PID 2912 wrote to memory of 2996	2912	MSBuild.exe	38
PID 2912 wrote to memory of 2996	2912	MSBuild.exe	38
PID 2912 wrote to memory of 2996	2912	MSBuild.exe	38
PID 2912 wrote to memory of 2996	2912	MSBuild.exe	38
PID 2996 wrote to memory of 1764	2996	explorer.exe	39
PID 2996 wrote to memory of 1764	2996	explorer.exe	39
PID 2996 wrote to memory of 1764	2996	explorer.exe	39

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\ChromeSetup.exe
"C:\Users\Admin\AppData\Local\Temp\ChromeSetup.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2552
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  - outlook_office_path
  - outlook_win_path
  PID:2912
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "powershell" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2296
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "powershell" Get-ItemPropertyValue -Path HKLM:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2308
- - C:\Windows\explorer.exe
    "C:\Windows\explorer.exe"
    3⤵
    - Boot or Logon Autostart Execution: Active Setup
    - Modifies registry class
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SendNotifyMessage
    - Suspicious use of WriteProcessMemory
    PID:2996
  - - C:\Windows\system32\ctfmon.exe
      ctfmon.exe
      4⤵
      PID:1764

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
PID:1812

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x2ec
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2100

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Boot or Logon Autostart Execution

T1547

Active Setup

T1547.014

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Active Setup

T1547.014

Defense Evasion

Modify Registry

T1112

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\Cab344C.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar8B15.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\02TLDCENZCWNUJE5C4D0.temp

Filesize
7KB

MD5
9d9bcd2b86aa4e6a6537cf23d5de04d0

SHA1
a0e2f6d25656c0f4453a5aaa26b949e44d4f2a86

SHA256
843cad9b547d7e99844cb6bbbca88ded74427045a59aa2040799ef1a1263129d

SHA512
db3c3763c78c9ede8674c949669319d59882180855ddca94ee3fe08d805586d285b1f942522e18083a83e26bc90faa8c31f56634ba2619610507a5a4e2ccea1c

Download Submit
memory/2552-1-0x0000000000B80000-0x0000000000BC4000-memory.dmp

Filesize
272KB

Download
memory/2552-2-0x0000000000650000-0x000000000066A000-memory.dmp

Filesize
104KB

Download
memory/2552-3-0x0000000000680000-0x0000000000686000-memory.dmp

Filesize
24KB

Download
memory/2552-0-0x0000000000C20000-0x0000000000D0E000-memory.dmp

Filesize
952KB

Download
memory/2912-4-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2912-9-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2912-11-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2912-10-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2912-5-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2912-28-0x0000000000DD0000-0x0000000000E10000-memory.dmp

Filesize
256KB

Download
memory/2912-6-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2912-7-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2912-54-0x00000000023A0000-0x00000000023D4000-memory.dmp

Filesize
208KB

Download
memory/2912-8-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download