7c8beef1ee7dc81589d52fd1f87f6698a46361bcfdf14235645d936d56197b45

Analysis

max time kernel
129s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-en-20220113
submitted
12/03/2022, 19:58

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General

Target
7c8beef1ee7dc81589d52fd1f87f6698a46361bcfdf14235645d936d56197b45.exe
Size 2.8MB
Sample220312-yp2j3scdcl
SHA256 7c8beef1ee7dc81589d52fd1f87f6698a46361bcfdf14235645d936d56197b45
MD5 7660a0c96c036c2cd675363383190b0c
SHA1 9e6cea96b5d5ceca4550b8297d0f05a5daee30f6
SHA512 f8637598fc7b7595a692bae57d309639e6f99c96148971844f09f8ebc0d33939659054e91d9a6cbe6463adcb7a5644672deab416d20e542f8ab099f4e3cb5812
MD5 SHA1 SHA512

Score

9^/10

spyware stealer upx

Malware Config

Signatures

NirSoft WebBrowserPassView 2 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/files/0x000500000001e7ca-145.dat	WebBrowserPassView
behavioral2/files/0x000500000001e7ca-146.dat	WebBrowserPassView

Nirsoft 6 IoCs

resource	yara_rule
behavioral2/files/0x000500000001e7ca-145.dat	Nirsoft
behavioral2/files/0x000500000001e7ca-146.dat	Nirsoft
behavioral2/files/0x000600000001e7c7-154.dat	Nirsoft
behavioral2/files/0x000600000001e7c7-155.dat	Nirsoft
behavioral2/files/0x000400000001e7c9-160.dat	Nirsoft
behavioral2/files/0x000400000001e7c9-161.dat	Nirsoft

Executes dropped EXE 6 IoCs

pid	Process
2812	RtkBtManServ.exe
1724	snuvcdsm.exe
3500	winhlp32.exe
1496	splwow64.exe
2976	hh.exe
2648	xwizard.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/files/0x000400000001e7c6-150.dat	upx
behavioral2/files/0x000400000001e7c8-151.dat	upx
behavioral2/files/0x000400000001e7c6-152.dat	upx
behavioral2/files/0x000400000001e7c8-153.dat	upx

Checks computer location settings 2 TTPs 5 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-1-5-21-1346565761-3498240568-4147300184-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Control Panel\International\Geo\Nation	7c8beef1ee7dc81589d52fd1f87f6698a46361bcfdf14235645d936d56197b45.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Control Panel\International\Geo\Nation	RtkBtManServ.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Control Panel\International\Geo\Nation	WScript.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Looks up external IP address via web service 2 IoCs

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

flow	ioc
8	api64.ipify.org
9	api64.ipify.org

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000_Classes\Local Settings	RtkBtManServ.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
1724	snuvcdsm.exe
1724	snuvcdsm.exe
1724	snuvcdsm.exe
1724	snuvcdsm.exe
2976	hh.exe
2976	hh.exe
2648	xwizard.exe
2648	xwizard.exe
2648	xwizard.exe
2648	xwizard.exe
2648	xwizard.exe
2648	xwizard.exe
2648	xwizard.exe
2648	xwizard.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2812	RtkBtManServ.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3028 wrote to memory of 2812	3028	7c8beef1ee7dc81589d52fd1f87f6698a46361bcfdf14235645d936d56197b45.exe	79
PID 3028 wrote to memory of 2812	3028	7c8beef1ee7dc81589d52fd1f87f6698a46361bcfdf14235645d936d56197b45.exe	79
PID 2812 wrote to memory of 5072	2812	RtkBtManServ.exe	80
PID 2812 wrote to memory of 5072	2812	RtkBtManServ.exe	80
PID 5072 wrote to memory of 4148	5072	WScript.exe	81
PID 5072 wrote to memory of 4148	5072	WScript.exe	81
PID 4148 wrote to memory of 1724	4148	cmd.exe	83
PID 4148 wrote to memory of 1724	4148	cmd.exe	83
PID 4148 wrote to memory of 1724	4148	cmd.exe	83
PID 2812 wrote to memory of 2836	2812	RtkBtManServ.exe	84
PID 2812 wrote to memory of 2836	2812	RtkBtManServ.exe	84
PID 2836 wrote to memory of 1332	2836	WScript.exe	85
PID 2836 wrote to memory of 1332	2836	WScript.exe	85
PID 1332 wrote to memory of 3500	1332	cmd.exe	87
PID 1332 wrote to memory of 3500	1332	cmd.exe	87
PID 1332 wrote to memory of 3500	1332	cmd.exe	87
PID 1332 wrote to memory of 1496	1332	cmd.exe	88
PID 1332 wrote to memory of 1496	1332	cmd.exe	88
PID 1332 wrote to memory of 1496	1332	cmd.exe	88
PID 1332 wrote to memory of 2976	1332	cmd.exe	89
PID 1332 wrote to memory of 2976	1332	cmd.exe	89
PID 1332 wrote to memory of 2976	1332	cmd.exe	89
PID 2812 wrote to memory of 1512	2812	RtkBtManServ.exe	90
PID 2812 wrote to memory of 1512	2812	RtkBtManServ.exe	90
PID 1512 wrote to memory of 3124	1512	WScript.exe	91
PID 1512 wrote to memory of 3124	1512	WScript.exe	91
PID 3124 wrote to memory of 2648	3124	cmd.exe	93
PID 3124 wrote to memory of 2648	3124	cmd.exe	93
PID 3124 wrote to memory of 2648	3124	cmd.exe	93
PID 2812 wrote to memory of 2668	2812	RtkBtManServ.exe	94
PID 2812 wrote to memory of 2668	2812	RtkBtManServ.exe	94
PID 2668 wrote to memory of 3572	2668	cmd.exe	96
PID 2668 wrote to memory of 3572	2668	cmd.exe	96

C:\Users\Admin\AppData\Local\Temp\7c8beef1ee7dc81589d52fd1f87f6698a46361bcfdf14235645d936d56197b45.exe
"C:\Users\Admin\AppData\Local\Temp\7c8beef1ee7dc81589d52fd1f87f6698a46361bcfdf14235645d936d56197b45.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3028
- C:\Users\Admin\AppData\Local\Temp\RtkBtManServ.exe
  "C:\Users\Admin\AppData\Local\Temp\RtkBtManServ.exe" ZhXl39BlhP84+Y4kurA8wpehxxqA0X22IMYZ6Vpiqs4uBmUCqrZO6aW6e2Qshqa8ydyxtvONVWmpVZ0CCk522FeeTQl9EkUOIdm/DTWGAj1Mq3K+O5CikIcj7LI7xzKxaKTieLpbd60L81BxHjMgDcf29YOPraP8rtNESO5tbXg=
  2⤵
  - Executes dropped EXE
  - Checks computer location settings
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2812
- - C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\compile.vbs"
    3⤵
    - Checks computer location settings
    - Suspicious use of WriteProcessMemory
    PID:5072
  - - C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c compile.bat
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4148
    - - C:\Users\Admin\AppData\Local\Temp\snuvcdsm.exe
        
        C:\Users\Admin\AppData\Local\Temp\snuvcdsm.exe /stext "C:\Users\Admin\AppData\Local\Temp\Admin_Passwords.txt"
        5⤵
        Executes dropped EXE
        Suspicious behavior: EnumeratesProcesses
        
        PID:1724
- - C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\compile.vbs"
    3⤵
    - Checks computer location settings
    - Suspicious use of WriteProcessMemory
    PID:2836
  - - C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c compile.bat
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1332
    - - C:\Users\Admin\AppData\Local\Temp\winhlp32.exe
        
        C:\Users\Admin\AppData\Local\Temp\winhlp32.exe /stext "C:\Users\Admin\AppData\Local\Temp\Cookies1"
        5⤵
        Executes dropped EXE
        
        PID:3500
    - - C:\Users\Admin\AppData\Local\Temp\splwow64.exe
        
        C:\Users\Admin\AppData\Local\Temp\splwow64.exe /stext "C:\Users\Admin\AppData\Local\Temp\Cookies2"
        5⤵
        Executes dropped EXE
        
        PID:1496
    - - C:\Users\Admin\AppData\Local\Temp\hh.exe
        
        C:\Users\Admin\AppData\Local\Temp\hh.exe /stext "C:\Users\Admin\AppData\Local\Temp\Cookies3"
        5⤵
        Executes dropped EXE
        Suspicious behavior: EnumeratesProcesses
        
        PID:2976
- - C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\compile.vbs"
    3⤵
    - Checks computer location settings
    - Suspicious use of WriteProcessMemory
    PID:1512
  - - C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c compile.bat
      4⤵
      Suspicious use of WriteProcessMemory
      PID:3124
    - - C:\Users\Admin\AppData\Local\Temp\xwizard.exe
        
        C:\Users\Admin\AppData\Local\Temp\xwizard.exe /stext "C:\Users\Admin\AppData\Local\Temp\Admin_History.txt"
        5⤵
        Executes dropped EXE
        Suspicious behavior: EnumeratesProcesses
        
        PID:2648
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C choice /C Y /N /D Y /T 3 & Del "C:\Users\Admin\AppData\Local\Temp\RtkBtManServ.exe"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2668
  - - C:\Windows\system32\choice.exe
      choice /C Y /N /D Y /T 3
      4⤵
      PID:3572

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Web Service

T1102

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

memory/2812-134-0x0000017E5DA00000-0x0000017E5DCDA000-memory.dmp

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memory/2812-137-0x0000017E78110000-0x0000017E78186000-memory.dmp

Download

memory/2812-136-0x0000017E5F880000-0x0000017E5F882000-memory.dmp

Download

memory/2812-135-0x00007FFC8A910000-0x00007FFC8B3D1000-memory.dmp

Download

memory/2812-142-0x0000017E797F0000-0x0000017E7980E000-memory.dmp

Download

memory/2812-139-0x0000017E79480000-0x0000017E794A2000-memory.dmp

Download

memory/2812-140-0x0000017E794B0000-0x0000017E794CA000-memory.dmp

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memory/2812-141-0x0000017E79500000-0x0000017E79508000-memory.dmp

Download

memory/3028-130-0x000001B4D43A0000-0x000001B4D467E000-memory.dmp

Download

memory/3028-131-0x00007FFC8A910000-0x00007FFC8B3D1000-memory.dmp

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