bc969496b9340a4fc425080312aef077c477680d6370370dc75edad1493837d3

General

Target

Purchasing Doc_ 6000019430.exe
Size

821KB
MD5

dd110367e0bea798085a0ddc03be26ca
SHA1

435c73338ab9d7af3b9ee380e326484e2ff2ea91
SHA256

bc969496b9340a4fc425080312aef077c477680d6370370dc75edad1493837d3
SHA512

76ddde3c000ccb5d47e060075da229d50948fdf6c9630c02848355cc6ec3b551e9e6984145d0e31688b9629f8ce92897b4278d4af1baf21a312d88fa8a51e089

Score

8^/10

Malware Config

Signatures

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\system32.exe	Purchasing Doc_ 6000019430.exe
File created	C:\Windows\SysWOW64\system32.exe	Purchasing Doc_ 6000019430.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	240	Purchasing Doc_ 6000019430.exe
Token: SeDebugPrivilege	516	system32.exe
Token: SeDebugPrivilege	360	InstallUtil.exe

Executes dropped EXE 2 IoCs

pid	Process
516	system32.exe
360	InstallUtil.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
360	InstallUtil.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 516 set thread context of 360	516	system32.exe	30

Adds Run entry to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-910373003-3952921535-3480519689-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-910373003-3952921535-3480519689-1000\Software\Microsoft\Windows\CurrentVersion\Run\system32 = "C:\\Windows\\system32\\pcalua.exe -a C:\\Windows\\SysWOW64\\system32.exe"	reg.exe

Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware

Data from Local System
T1005

Credentials in Files
T1081
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware

Data from Local System
T1005

Credentials in Files
T1081

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
240	Purchasing Doc_ 6000019430.exe
240	Purchasing Doc_ 6000019430.exe
240	Purchasing Doc_ 6000019430.exe
516	system32.exe
516	system32.exe
516	system32.exe
360	InstallUtil.exe
360	InstallUtil.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 240 wrote to memory of 740	240	Purchasing Doc_ 6000019430.exe	24
PID 240 wrote to memory of 740	240	Purchasing Doc_ 6000019430.exe	24
PID 240 wrote to memory of 740	240	Purchasing Doc_ 6000019430.exe	24
PID 240 wrote to memory of 740	240	Purchasing Doc_ 6000019430.exe	24
PID 740 wrote to memory of 1068	740	cmd.exe	26
PID 740 wrote to memory of 1068	740	cmd.exe	26
PID 740 wrote to memory of 1068	740	cmd.exe	26
PID 740 wrote to memory of 1068	740	cmd.exe	26
PID 240 wrote to memory of 516	240	Purchasing Doc_ 6000019430.exe	29
PID 240 wrote to memory of 516	240	Purchasing Doc_ 6000019430.exe	29
PID 240 wrote to memory of 516	240	Purchasing Doc_ 6000019430.exe	29
PID 240 wrote to memory of 516	240	Purchasing Doc_ 6000019430.exe	29
PID 516 wrote to memory of 360	516	system32.exe	30
PID 516 wrote to memory of 360	516	system32.exe	30
PID 516 wrote to memory of 360	516	system32.exe	30
PID 516 wrote to memory of 360	516	system32.exe	30
PID 516 wrote to memory of 360	516	system32.exe	30
PID 516 wrote to memory of 360	516	system32.exe	30
PID 516 wrote to memory of 360	516	system32.exe	30
PID 516 wrote to memory of 360	516	system32.exe	30
PID 516 wrote to memory of 360	516	system32.exe	30
PID 516 wrote to memory of 360	516	system32.exe	30
PID 516 wrote to memory of 360	516	system32.exe	30
PID 516 wrote to memory of 360	516	system32.exe	30

Loads dropped DLL 2 IoCs

pid	Process
240	Purchasing Doc_ 6000019430.exe
516	system32.exe

C:\Users\Admin\AppData\Local\Temp\Purchasing Doc_ 6000019430.exe
"C:\Users\Admin\AppData\Local\Temp\Purchasing Doc_ 6000019430.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- Loads dropped DLL
PID:240
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v system32 /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Windows\SysWOW64\system32.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:740
- - C:\Windows\SysWOW64\reg.exe
    REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v system32 /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Windows\SysWOW64\system32.exe"
    3⤵
    - Adds Run entry to start application
    PID:1068
- C:\Windows\SysWOW64\system32.exe
  "C:\Windows\SysWOW64\system32.exe"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  - Loads dropped DLL
  PID:516
- - C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
    "C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    - Executes dropped EXE
    - Suspicious use of SetWindowsHookEx
    - Suspicious behavior: EnumeratesProcesses
    PID:360

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

3

T1081

Discovery

Lateral Movement

Collection

Data from Local System

3

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/360-17-0x0000000000090000-0x00000000000E0000-memory.dmp

Filesize
320KB

Download
memory/360-18-0x0000000000090000-0x00000000000E0000-memory.dmp

Filesize
320KB

Download

Analysis

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