9532095cf936beca817c76c65d6cfe9a3153e5b8e6337b767207c8b37b39cfa6

Analysis

max time kernel
80s
max time network
150s
platform
windows10_x64
resource
win10-en
submitted
11/09/2021, 18:51

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General

Target
c94495cf042b2415ca1aa23282094982.exe
Size 134KB
Sample210911-xhhb7aefgp
SHA256 9532095cf936beca817c76c65d6cfe9a3153e5b8e6337b767207c8b37b39cfa6
MD5 c94495cf042b2415ca1aa23282094982
SHA1 2e4c2f400887430de2752200d1d986e3529d5530
SHA512 76dab7c8ebcae9a2072a2b592865a799f7431bc757f9cc33966c0d3879c02c71525344cd2f0edab356a349506635170cb47355716e3f069d56c0b21281a05f6c
MD5 SHA1 SHA512

Score

8^/10

discovery persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 6 IoCs

pid	Process
4736	712910.exe
4784	5148216.exe
4952	WinHoster.exe
5036	2887178.exe
5068	5585340.exe
4160	uIA5.eXE

Loads dropped DLL 1 IoCs

pid	Process
4024	rundll32.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
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2559286294-2439613352-4032193287-1000\Software\Microsoft\Windows\CurrentVersion\Run\WinHost = "C:\\Users\\Admin\\AppData\\Roaming\\WinHost\\WinHoster.exe"	5148216.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\AppCompat\Programs\Amcache.hve.tmp	WerFault.exe

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

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3964	4736	WerFault.exe	68
4468	5068	WerFault.exe	72

Kills process with taskkill 1 IoCs

evasion

pid	Process
2224	taskkill.exe

Suspicious behavior: EnumeratesProcesses 33 IoCs

pid	Process
4736	712910.exe
3964	WerFault.exe
3964	WerFault.exe
3964	WerFault.exe
3964	WerFault.exe
3964	WerFault.exe
3964	WerFault.exe
3964	WerFault.exe
3964	WerFault.exe
3964	WerFault.exe
3964	WerFault.exe
3964	WerFault.exe
3964	WerFault.exe
3964	WerFault.exe
3964	WerFault.exe
3964	WerFault.exe
3964	WerFault.exe
5068	5585340.exe
4468	WerFault.exe
4468	WerFault.exe
4468	WerFault.exe
4468	WerFault.exe
4468	WerFault.exe
4468	WerFault.exe
4468	WerFault.exe
4468	WerFault.exe
4468	WerFault.exe
4468	WerFault.exe
4468	WerFault.exe
4468	WerFault.exe
4468	WerFault.exe
4468	WerFault.exe
4468	WerFault.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	4652	c94495cf042b2415ca1aa23282094982.exe
Token: SeDebugPrivilege	4736	712910.exe
Token: SeDebugPrivilege	5068	5585340.exe
Token: SeDebugPrivilege	2224	taskkill.exe
Token: SeDebugPrivilege	3964	WerFault.exe
Token: SeRestorePrivilege	4468	WerFault.exe
Token: SeBackupPrivilege	4468	WerFault.exe
Token: SeBackupPrivilege	4468	WerFault.exe
Token: SeDebugPrivilege	4468	WerFault.exe

Suspicious use of WriteProcessMemory 35 IoCs

description	pid	Process	procid_target
PID 4652 wrote to memory of 4736	4652	c94495cf042b2415ca1aa23282094982.exe	68
PID 4652 wrote to memory of 4736	4652	c94495cf042b2415ca1aa23282094982.exe	68
PID 4652 wrote to memory of 4784	4652	c94495cf042b2415ca1aa23282094982.exe	69
PID 4652 wrote to memory of 4784	4652	c94495cf042b2415ca1aa23282094982.exe	69
PID 4652 wrote to memory of 4784	4652	c94495cf042b2415ca1aa23282094982.exe	69
PID 4784 wrote to memory of 4952	4784	5148216.exe	70
PID 4784 wrote to memory of 4952	4784	5148216.exe	70
PID 4784 wrote to memory of 4952	4784	5148216.exe	70
PID 4652 wrote to memory of 5036	4652	c94495cf042b2415ca1aa23282094982.exe	71
PID 4652 wrote to memory of 5036	4652	c94495cf042b2415ca1aa23282094982.exe	71
PID 4652 wrote to memory of 5036	4652	c94495cf042b2415ca1aa23282094982.exe	71
PID 4652 wrote to memory of 5068	4652	c94495cf042b2415ca1aa23282094982.exe	72
PID 4652 wrote to memory of 5068	4652	c94495cf042b2415ca1aa23282094982.exe	72
PID 4652 wrote to memory of 5068	4652	c94495cf042b2415ca1aa23282094982.exe	72
PID 5036 wrote to memory of 3404	5036	2887178.exe	73
PID 5036 wrote to memory of 3404	5036	2887178.exe	73
PID 5036 wrote to memory of 3404	5036	2887178.exe	73
PID 3404 wrote to memory of 3568	3404	mshta.exe	74
PID 3404 wrote to memory of 3568	3404	mshta.exe	74
PID 3404 wrote to memory of 3568	3404	mshta.exe	74
PID 3568 wrote to memory of 4160	3568	cmd.exe	76
PID 3568 wrote to memory of 4160	3568	cmd.exe	76
PID 3568 wrote to memory of 4160	3568	cmd.exe	76
PID 3568 wrote to memory of 2224	3568	cmd.exe	77
PID 3568 wrote to memory of 2224	3568	cmd.exe	77
PID 3568 wrote to memory of 2224	3568	cmd.exe	77
PID 4160 wrote to memory of 764	4160	uIA5.eXE	78
PID 4160 wrote to memory of 764	4160	uIA5.eXE	78
PID 4160 wrote to memory of 764	4160	uIA5.eXE	78
PID 764 wrote to memory of 3896	764	mshta.exe	79
PID 764 wrote to memory of 3896	764	mshta.exe	79
PID 764 wrote to memory of 3896	764	mshta.exe	79
PID 4160 wrote to memory of 4024	4160	uIA5.eXE	81
PID 4160 wrote to memory of 4024	4160	uIA5.eXE	81
PID 4160 wrote to memory of 4024	4160	uIA5.eXE	81

C:\Users\Admin\AppData\Local\Temp\c94495cf042b2415ca1aa23282094982.exe
"C:\Users\Admin\AppData\Local\Temp\c94495cf042b2415ca1aa23282094982.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4652
- C:\ProgramData\712910.exe
  "C:\ProgramData\712910.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4736
- - C:\Windows\system32\WerFault.exe
    C:\Windows\system32\WerFault.exe -u -p 4736 -s 2024
    3⤵
    - Program crash
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3964
- C:\ProgramData\5148216.exe
  "C:\ProgramData\5148216.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:4784
- - C:\Users\Admin\AppData\Roaming\WinHost\WinHoster.exe
    "C:\Users\Admin\AppData\Roaming\WinHost\WinHoster.exe"
    3⤵
    - Executes dropped EXE
    PID:4952
- C:\ProgramData\2887178.exe
  "C:\ProgramData\2887178.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:5036
- - C:\Windows\SysWOW64\mshta.exe
    "C:\Windows\System32\mshta.exe" VbScRIpt:CLOSE (CrEATEoBJeCT("wsCrIPt.SHell" ). rUn( "C:\Windows\system32\cmd.exe /Q /C TYPE ""C:\ProgramData\2887178.exe"" > uIA5.eXE && STaRt UiA5.eXe /P0NTOdcYDlh~kX43m7& if """"== """" for %D in ( ""C:\ProgramData\2887178.exe"" ) do taskkill /Im ""%~NxD"" /f ", 0 ,TRuE) )
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3404
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /Q /C TYPE "C:\ProgramData\2887178.exe" > uIA5.eXE && STaRt UiA5.eXe /P0NTOdcYDlh~kX43m7&if ""== "" for %D in ( "C:\ProgramData\2887178.exe" ) do taskkill /Im "%~NxD" /f
      4⤵
      Suspicious use of WriteProcessMemory
      PID:3568
    - - C:\Users\Admin\AppData\Local\Temp\uIA5.eXE
        
        UiA5.eXe /P0NTOdcYDlh~kX43m7
        5⤵
        Executes dropped EXE
        Suspicious use of WriteProcessMemory
        
        PID:4160
      - C:\Windows\SysWOW64\mshta.exe
        
        "C:\Windows\System32\mshta.exe" VbScRIpt:CLOSE (CrEATEoBJeCT("wsCrIPt.SHell" ). rUn( "C:\Windows\system32\cmd.exe /Q /C TYPE ""C:\Users\Admin\AppData\Local\Temp\uIA5.eXE"" > uIA5.eXE && STaRt UiA5.eXe /P0NTOdcYDlh~kX43m7& if ""/P0NTOdcYDlh~kX43m7""== """" for %D in ( ""C:\Users\Admin\AppData\Local\Temp\uIA5.eXE"" ) do taskkill /Im ""%~NxD"" /f ", 0 ,TRuE) )
        6⤵
        Suspicious use of WriteProcessMemory
        
        PID:764
        
        C:\Windows\SysWOW64\cmd.exe
        
        "C:\Windows\system32\cmd.exe" /Q /C TYPE "C:\Users\Admin\AppData\Local\Temp\uIA5.eXE" > uIA5.eXE && STaRt UiA5.eXe /P0NTOdcYDlh~kX43m7&if "/P0NTOdcYDlh~kX43m7"== "" for %D in ( "C:\Users\Admin\AppData\Local\Temp\uIA5.eXE" ) do taskkill /Im "%~NxD" /f
        7⤵
        
        PID:3896
      - C:\Windows\SysWOW64\rundll32.exe
        
        "C:\Windows\System32\rundll32.exe" MVqJ65P._,hfmnID
        6⤵
        Loads dropped DLL
        
        PID:4024
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /Im "2887178.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:2224
- C:\ProgramData\5585340.exe
  "C:\ProgramData\5585340.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5068
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 5068 -s 2116
    3⤵
    - Drops file in Windows directory
    - Program crash
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4468

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

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

Replay Monitor

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Downloads

memory/4024-172-0x0000000004F30000-0x0000000004FCA000-memory.dmp

Download

memory/4024-171-0x0000000004DC0000-0x0000000004E74000-memory.dmp

Download

memory/4024-170-0x0000000004C70000-0x0000000004DB7000-memory.dmp

Download

memory/4024-169-0x0000000004E80000-0x0000000004F2E000-memory.dmp

Download

memory/4024-168-0x00000000007F0000-0x00000000007F1000-memory.dmp

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memory/4652-115-0x0000000000F30000-0x0000000000F31000-memory.dmp

Download

memory/4652-118-0x0000000001580000-0x000000000159B000-memory.dmp

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memory/4652-119-0x0000000001560000-0x0000000001561000-memory.dmp

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memory/4652-126-0x000000001BB60000-0x000000001BB62000-memory.dmp

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memory/4652-117-0x0000000001550000-0x0000000001551000-memory.dmp

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memory/4736-123-0x0000000000470000-0x0000000000471000-memory.dmp

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memory/4736-135-0x000000001B140000-0x000000001B142000-memory.dmp

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memory/4736-125-0x0000000000B70000-0x0000000000B8E000-memory.dmp

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memory/4784-134-0x0000000007550000-0x0000000007551000-memory.dmp

Download

memory/4784-133-0x00000000079B0000-0x00000000079B1000-memory.dmp

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memory/4784-130-0x0000000000800000-0x0000000000801000-memory.dmp

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memory/4784-132-0x0000000002A00000-0x0000000002A04000-memory.dmp

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memory/4952-147-0x0000000007240000-0x0000000007241000-memory.dmp

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memory/4952-154-0x00000000048E0000-0x00000000048E1000-memory.dmp

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memory/5068-153-0x00000000048E0000-0x00000000048FB000-memory.dmp

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memory/5068-158-0x0000000004920000-0x0000000004921000-memory.dmp

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memory/5068-151-0x0000000000020000-0x0000000000021000-memory.dmp

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memory/5068-157-0x0000000007840000-0x0000000007841000-memory.dmp

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memory/5068-176-0x0000000007ED0000-0x0000000007ED1000-memory.dmp

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