b986a3fdb6f50f277c2a75a39f63cb48cd2ebcc68b21c9e84f91d32327073f3d

Analysis

max time kernel
150s
max time network
99s
platform
windows11-21h2_x64
resource
win11-20241007-en
resource tags

arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
submitted
20/11/2024, 14:55

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General

Target

1337 SteamACC Stealer Private/1337 SteamACC Stealer Private.exe
Size

193KB
MD5

d3b6a612e1627ac55ed1036d37c078d2
SHA1

86971ed075e24fbcb5590a42432c0610f77a009d
SHA256

a5cd5d4e6cebf88a8237da82cd4472ff39270f06ad5759eb0e2ea10e04a4a8b5
SHA512

728cf4d1a2e29341aa381673302faf199abb4ee24937eee65e888a7a2adb83ae64626dfecf09b857d0b129b9d2955de86a4c3082422d89830b852f143afb2b75
SSDEEP

1536:x4lOeP6M2v9YZQfx+kPmJBtxPeZ3YtlylA9+9POMjHi:x4lOA8hfx+xJBeZ3sylA9+9GWi

Score

8^/10

discovery execution persistence

Malware Config

Signatures

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
1488	powershell.exe
1080	powershell.exe

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft Startup.lnk	Launcher.exe

Executes dropped EXE 3 IoCs

pid	Process
4056	Windows Services.exe
2388	Secure System Shell.exe
2780	Runtime Explorer.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4249425805-3408538557-1766626484-1000\Software\Microsoft\Windows\CurrentVersion\Run\Runtime Explorer = "C:\\Windows\\IMF\\\\Windows Services.exe"	Launcher.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4249425805-3408538557-1766626484-1000\Software\Microsoft\Windows\CurrentVersion\Run\Runtime Explorer = "\"C:\\Users\\Admin\\AppData\\Roaming\\Runtime Explorer.exe\""	Runtime Explorer.exe

Drops file in Windows directory 9 IoCs

description	ioc	Process
File created	C:\Windows\IMF\LICENCE.zip	Launcher.exe
File opened for modification	C:\Windows\IMF\LICENCE.zip	Launcher.exe
File created	C:\Windows\IMF\LICENCE.dat	Launcher.exe
File created	C:\Windows\IMF\Runtime Explorer.exe.tmp	Launcher.exe
File opened for modification	C:\Windows\IMF\Runtime Explorer.exe	Launcher.exe
File created	C:\Windows\IMF\Windows Services.exe.tmp	Launcher.exe
File opened for modification	C:\Windows\IMF\Secure System Shell.exe	Launcher.exe
File opened for modification	C:\Windows\IMF\Windows Services.exe	Launcher.exe
File created	C:\Windows\IMF\Secure System Shell.exe.tmp	Launcher.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 8 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	Secure System Shell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Runtime Explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1337 SteamACC Stealer Private.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Launcher.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bin.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Windows Services.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
1968	Launcher.exe
1080	powershell.exe
1080	powershell.exe
4056	Windows Services.exe
4056	Windows Services.exe
4056	Windows Services.exe
4056	Windows Services.exe
1488	powershell.exe
2388	Secure System Shell.exe
1488	powershell.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	1968	Launcher.exe
Token: SeDebugPrivilege	1080	powershell.exe
Token: SeDebugPrivilege	4056	Windows Services.exe
Token: SeDebugPrivilege	1488	powershell.exe
Token: SeDebugPrivilege	2388	Secure System Shell.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3388	bin.exe
2780	Runtime Explorer.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1120 wrote to memory of 1968	1120	1337 SteamACC Stealer Private.exe	80
PID 1120 wrote to memory of 1968	1120	1337 SteamACC Stealer Private.exe	80
PID 1120 wrote to memory of 1968	1120	1337 SteamACC Stealer Private.exe	80
PID 1968 wrote to memory of 1080	1968	Launcher.exe	81
PID 1968 wrote to memory of 1080	1968	Launcher.exe	81
PID 1968 wrote to memory of 1080	1968	Launcher.exe	81
PID 1120 wrote to memory of 3388	1120	1337 SteamACC Stealer Private.exe	83
PID 1120 wrote to memory of 3388	1120	1337 SteamACC Stealer Private.exe	83
PID 1120 wrote to memory of 3388	1120	1337 SteamACC Stealer Private.exe	83
PID 1968 wrote to memory of 4056	1968	Launcher.exe	84
PID 1968 wrote to memory of 4056	1968	Launcher.exe	84
PID 1968 wrote to memory of 4056	1968	Launcher.exe	84
PID 4056 wrote to memory of 2388	4056	Windows Services.exe	85
PID 4056 wrote to memory of 2388	4056	Windows Services.exe	85
PID 4056 wrote to memory of 2388	4056	Windows Services.exe	85
PID 4056 wrote to memory of 2780	4056	Windows Services.exe	86
PID 4056 wrote to memory of 2780	4056	Windows Services.exe	86
PID 4056 wrote to memory of 2780	4056	Windows Services.exe	86
PID 2780 wrote to memory of 1488	2780	Runtime Explorer.exe	87
PID 2780 wrote to memory of 1488	2780	Runtime Explorer.exe	87
PID 2780 wrote to memory of 1488	2780	Runtime Explorer.exe	87

C:\Users\Admin\AppData\Local\Temp\1337 SteamACC Stealer Private\1337 SteamACC Stealer Private.exe
"C:\Users\Admin\AppData\Local\Temp\1337 SteamACC Stealer Private\1337 SteamACC Stealer Private.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1120
- C:\Users\Admin\AppData\Local\Temp\1337 SteamACC Stealer Private\data\Launcher.exe
  "C:\Users\Admin\AppData\Local\Temp\1337 SteamACC Stealer Private\data\Launcher.exe"
  2⤵
  - Drops startup file
  - Adds Run key to start application
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1968
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" add-mppreference -exclusionpath C:\Windows\IMF\
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1080
- - C:\Windows\IMF\Windows Services.exe
    "C:\Windows\IMF\Windows Services.exe" {Arguments If Needed}
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4056
  - - C:\Windows\IMF\Secure System Shell.exe
      "C:\Windows\IMF\Secure System Shell.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2388
  - - C:\Windows\IMF\Runtime Explorer.exe
      "C:\Windows\IMF\Runtime Explorer.exe"
      4⤵
      Executes dropped EXE
      Adds Run key to start application
      System Location Discovery: System Language Discovery
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:2780
    - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" add-mppreference -exclusionpath C:\Users\Admin\AppData\Roaming\
        5⤵
        Command and Scripting Interpreter: PowerShell
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:1488
- C:\Users\Admin\AppData\Local\Temp\1337 SteamACC Stealer Private\data\bin.exe
  "C:\Users\Admin\AppData\Local\Temp\1337 SteamACC Stealer Private\data\bin.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:3388

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

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
d0c46cad6c0778401e21910bd6b56b70

SHA1
7be418951ea96326aca445b8dfe449b2bfa0dca6

SHA256
9600b3fdf0565ccb49e21656aa4b24d7c18f776bfd04d9ee984b134707550f02

SHA512
057531b468f7fbbb2175a696a8aab274dec0d17d9f71df309edcff35e064f3378050066a3df47ccd03048fac461594ec75e3d4fe64f9dd79949d129f51e02949

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
18KB

MD5
f105fef24d4f63fafb78df4358627de5

SHA1
a62f6d5a8835afb8cc6c1ee30a7c530b730517d4

SHA256
4f166ba34494043108bb300862c2a466f91fe8900e28e305cd96c8fabe4fd818

SHA512
ae2960558c806b75182a167e54116700e192611d83c2a319107590de06da492016d92718c22bd498804307ce99bd926c2d69f2758b74a295bde7498506b12ec7

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_nt4xs15t.1lm.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Windows\IMF\Runtime Explorer.exe

Filesize
152KB

MD5
03f5e0141f4519f0c5ac26ce0b036a0f

SHA1
4f7a2a230e7a194a898cc9f2d563ac8777fe99c0

SHA256
78a408c628e33e3332645f480ee7ce01b5dc24fc96cf16ffa0868d43f3d421ef

SHA512
86a68f040654006e06b51c5714e0d7168d0d1bef7f3c39843632068104f773f771d21be4bc251d712f3e915cd1058f89ad31d9e3f3d9e7cf6da6785cbf22d8d7

Download Submit
C:\Windows\IMF\Secure System Shell.exe

Filesize
45KB

MD5
7d0c7359e5b2daa5665d01afdc98cc00

SHA1
c3cc830c8ffd0f53f28d89dcd9f3426be87085cb

SHA256
f1abd5ab03189e82971513e6ca04bd372fcf234d670079888f01cf4addd49809

SHA512
a8f82b11b045d8dd744506f4f56f3382b33a03684a6aebc91a02ea901c101b91cb43b7d0213f72f39cbb22f616ecd5de8b9e6c99fb5669f26a3ea6bcb63c8407

Download Submit
C:\Windows\IMF\Windows Services.exe

Filesize
46KB

MD5
ad0ce1302147fbdfecaec58480eb9cf9

SHA1
874efbc76e5f91bc1425a43ea19400340f98d42b

SHA256
2c339b52b82e73b4698a0110cdfe310c00c5c69078e9e1bd6fa1308652bf82a3

SHA512
adccd5520e01b673c2fc5c451305fe31b1a3e74891aece558f75fefc50218adf1fb81bb8c7f19969929d3fecb0fdb2cb5b564400d51e0a5a1ad8d5bc2d4eed53

Download Submit
memory/1080-15-0x0000000005180000-0x00000000057AA000-memory.dmp

Filesize
6.2MB

Download
memory/1080-21-0x00000000058E0000-0x0000000005946000-memory.dmp

Filesize
408KB

Download
memory/1080-92-0x00000000074A0000-0x00000000074BA000-memory.dmp

Filesize
104KB

Download
memory/1080-70-0x00000000071D0000-0x00000000071DA000-memory.dmp

Filesize
40KB

Download
memory/1080-99-0x0000000007490000-0x0000000007498000-memory.dmp

Filesize
32KB

Download
memory/1080-31-0x0000000005E00000-0x0000000005E1E000-memory.dmp

Filesize
120KB

Download
memory/1080-86-0x00000000073E0000-0x0000000007476000-memory.dmp

Filesize
600KB

Download
memory/1080-13-0x0000000002610000-0x0000000002646000-memory.dmp

Filesize
216KB

Download
memory/1080-89-0x0000000007390000-0x000000000739E000-memory.dmp

Filesize
56KB

Download
memory/1080-59-0x0000000007790000-0x0000000007E0A000-memory.dmp

Filesize
6.5MB

Download
memory/1080-19-0x0000000005050000-0x0000000005072000-memory.dmp

Filesize
136KB

Download
memory/1080-91-0x00000000073A0000-0x00000000073B5000-memory.dmp

Filesize
84KB

Download
memory/1080-20-0x0000000005110000-0x0000000005176000-memory.dmp

Filesize
408KB

Download
memory/1080-27-0x0000000005950000-0x0000000005CA7000-memory.dmp

Filesize
3.3MB

Download
memory/1080-60-0x0000000007150000-0x000000000716A000-memory.dmp

Filesize
104KB

Download
memory/1080-88-0x0000000007360000-0x0000000007371000-memory.dmp

Filesize
68KB

Download
memory/1080-32-0x0000000005E90000-0x0000000005EDC000-memory.dmp

Filesize
304KB

Download
memory/1080-34-0x000000006EFA0000-0x000000006EFEC000-memory.dmp

Filesize
304KB

Download
memory/1080-33-0x0000000006FE0000-0x0000000007014000-memory.dmp

Filesize
208KB

Download
memory/1080-43-0x00000000063B0000-0x00000000063CE000-memory.dmp

Filesize
120KB

Download
memory/1080-44-0x0000000007020000-0x00000000070C4000-memory.dmp

Filesize
656KB

Download
memory/1120-0-0x00000000745FE000-0x00000000745FF000-memory.dmp

Filesize
4KB

Download
memory/1120-4-0x0000000005940000-0x00000000059D2000-memory.dmp

Filesize
584KB

Download
memory/1120-18-0x00000000745F0000-0x0000000074DA1000-memory.dmp

Filesize
7.7MB

Download
memory/1120-1-0x0000000000C90000-0x0000000000CC6000-memory.dmp

Filesize
216KB

Download
memory/1120-2-0x0000000005770000-0x000000000580C000-memory.dmp

Filesize
624KB

Download
memory/1120-3-0x0000000005E50000-0x00000000063F6000-memory.dmp

Filesize
5.6MB

Download
memory/1120-7-0x00000000745F0000-0x0000000074DA1000-memory.dmp

Filesize
7.7MB

Download
memory/1120-6-0x00000000058A0000-0x00000000058F6000-memory.dmp

Filesize
344KB

Download
memory/1120-5-0x0000000005760000-0x000000000576A000-memory.dmp

Filesize
40KB

Download
memory/1488-120-0x0000000007D20000-0x0000000007D31000-memory.dmp

Filesize
68KB

Download
memory/1488-111-0x000000006EFA0000-0x000000006EFEC000-memory.dmp

Filesize
304KB

Download
memory/1488-121-0x0000000007D60000-0x0000000007D75000-memory.dmp

Filesize
84KB

Download
memory/1968-12-0x00000000745F0000-0x0000000074DA1000-memory.dmp

Filesize
7.7MB

Download
memory/1968-87-0x00000000745F0000-0x0000000074DA1000-memory.dmp

Filesize
7.7MB

Download
memory/1968-69-0x00000000071D0000-0x00000000071EE000-memory.dmp

Filesize
120KB

Download
memory/1968-68-0x00000000071F0000-0x0000000007266000-memory.dmp

Filesize
472KB

Download
memory/1968-11-0x00000000064B0000-0x000000000652E000-memory.dmp

Filesize
504KB

Download
memory/1968-10-0x00000000745F0000-0x0000000074DA1000-memory.dmp

Filesize
7.7MB

Download
memory/1968-9-0x00000000745F0000-0x0000000074DA1000-memory.dmp

Filesize
7.7MB

Download
memory/1968-8-0x0000000000950000-0x0000000000964000-memory.dmp

Filesize
80KB

Download
memory/2388-96-0x00000000005B0000-0x00000000005C2000-memory.dmp

Filesize
72KB

Download
memory/4056-85-0x00000000006D0000-0x00000000006E2000-memory.dmp

Filesize
72KB

Download