75e391b7f22fa2b6379af5c9b4e6588370ddbf4b2f1e3bce6bc6d31c446b084f

General

Target

16f7a0a349b11398ed2c8b0c1e84a715.exe
Size

42KB
MD5

16f7a0a349b11398ed2c8b0c1e84a715
SHA1

4f8af77baa7c8ab008925a1494a5a034eb3bceef
SHA256

75e391b7f22fa2b6379af5c9b4e6588370ddbf4b2f1e3bce6bc6d31c446b084f
SHA512

72714f47663b8eb15f19f240c4c1625deb5fdb987e2e36056de307a34365aaa6f545280d8c2ecb9a78c01c0e8cc2c7a1b69019cde59c7cfd157ea09ebf963854
SSDEEP

768:rppWsMo8MeEDVWkcQjfiLzP674J52B7X07OJbzdXoiPgtPErj6o1lcKe:rruoMLiaLzY4J247ONdfgw6qlj

Score

7^/10

Malware Config

Signatures

Checks computer location settings 2 TTPs 4 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-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation	16f7a0a349b11398ed2c8b0c1e84a715.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation	osmkhtmy.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation	osmkhtmy.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation	osmkhtmy.exe

Deletes itself 1 IoCs

pid	Process
912	osmkhtmy.exe

Executes dropped EXE 3 IoCs

pid	Process
912	osmkhtmy.exe
4148	osmkhtmy.exe
5056	osmkhtmy.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	\??\c:\windows\SysWOW64\osmkhtmy.exe	16f7a0a349b11398ed2c8b0c1e84a715.exe
File opened for modification	\??\c:\windows\SysWOW64\osmkhtmy.exe	16f7a0a349b11398ed2c8b0c1e84a715.exe

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

System Information Discovery
T1082

Modifies registry class 7 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node	16f7a0a349b11398ed2c8b0c1e84a715.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID	16f7a0a349b11398ed2c8b0c1e84a715.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{00000000-0000-0000-0000-000000000001}	16f7a0a349b11398ed2c8b0c1e84a715.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{00000000-0000-0000-0000-000000000001}\InprocServer32	osmkhtmy.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{00000000-0000-0000-0000-000000000001}\InprocServer32	osmkhtmy.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{00000000-0000-0000-0000-000000000001}\InprocServer32	osmkhtmy.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{00000000-0000-0000-0000-000000000001}\InprocServer32	16f7a0a349b11398ed2c8b0c1e84a715.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 4756 wrote to memory of 2476	4756	16f7a0a349b11398ed2c8b0c1e84a715.exe	89
PID 4756 wrote to memory of 2476	4756	16f7a0a349b11398ed2c8b0c1e84a715.exe	89
PID 4756 wrote to memory of 2476	4756	16f7a0a349b11398ed2c8b0c1e84a715.exe	89
PID 4756 wrote to memory of 912	4756	16f7a0a349b11398ed2c8b0c1e84a715.exe	90
PID 4756 wrote to memory of 912	4756	16f7a0a349b11398ed2c8b0c1e84a715.exe	90
PID 4756 wrote to memory of 912	4756	16f7a0a349b11398ed2c8b0c1e84a715.exe	90
PID 912 wrote to memory of 1096	912	osmkhtmy.exe	91
PID 912 wrote to memory of 1096	912	osmkhtmy.exe	91
PID 912 wrote to memory of 1096	912	osmkhtmy.exe	91
PID 912 wrote to memory of 4148	912	osmkhtmy.exe	92
PID 912 wrote to memory of 4148	912	osmkhtmy.exe	92
PID 912 wrote to memory of 4148	912	osmkhtmy.exe	92
PID 4148 wrote to memory of 3776	4148	osmkhtmy.exe	93
PID 4148 wrote to memory of 3776	4148	osmkhtmy.exe	93
PID 4148 wrote to memory of 3776	4148	osmkhtmy.exe	93
PID 4148 wrote to memory of 5056	4148	osmkhtmy.exe	106
PID 4148 wrote to memory of 5056	4148	osmkhtmy.exe	106
PID 4148 wrote to memory of 5056	4148	osmkhtmy.exe	106
PID 5056 wrote to memory of 4732	5056	osmkhtmy.exe	107
PID 5056 wrote to memory of 4732	5056	osmkhtmy.exe	107
PID 5056 wrote to memory of 4732	5056	osmkhtmy.exe	107

C:\Users\Admin\AppData\Local\Temp\16f7a0a349b11398ed2c8b0c1e84a715.exe
"C:\Users\Admin\AppData\Local\Temp\16f7a0a349b11398ed2c8b0c1e84a715.exe"
1⤵
- Checks computer location settings
- Drops file in System32 directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4756
- C:\Windows\SysWOW64\regsvr32.exe
  "C:\Windows\system32\regsvr32.exe" C:\Windows\system32\SafeSearch.dll /u /s
  2⤵
  PID:2476
- C:\windows\SysWOW64\osmkhtmy.exe
  "C:\windows\system32\osmkhtmy.exe" -kill c:\users\admin\appdata\local\temp\16f7a0a349b11398ed2c8b0c1e84a715.exe /install
  2⤵
  - Checks computer location settings
  - Deletes itself
  - Executes dropped EXE
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:912
- - C:\Windows\SysWOW64\regsvr32.exe
    "C:\Windows\system32\regsvr32.exe" C:\Windows\system32\SafeSearch.dll /u /s
    3⤵
    PID:1096
- - C:\windows\SysWOW64\osmkhtmy.exe
    "C:\windows\system32\osmkhtmy.exe" -kill c:\windows\syswow64\osmkhtmy.exe /install /install
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Modifies registry class
    - Suspicious use of WriteProcessMemory
    PID:4148
  - - C:\Windows\SysWOW64\regsvr32.exe
      "C:\Windows\system32\regsvr32.exe" C:\Windows\system32\SafeSearch.dll /u /s
      4⤵
      PID:3776
  - - C:\windows\SysWOW64\osmkhtmy.exe
      "C:\windows\system32\osmkhtmy.exe" -kill c:\windows\syswow64\osmkhtmy.exe /install /install /install
      4⤵
      Checks computer location settings
      Executes dropped EXE
      Modifies registry class
      Suspicious use of WriteProcessMemory
      PID:5056
    - - C:\Windows\SysWOW64\regsvr32.exe
        
        "C:\Windows\system32\regsvr32.exe" C:\Windows\system32\SafeSearch.dll /u /s
        5⤵
        
        PID:4732

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\osmkhtmy.exe

Filesize
42KB

MD5
16f7a0a349b11398ed2c8b0c1e84a715

SHA1
4f8af77baa7c8ab008925a1494a5a034eb3bceef

SHA256
75e391b7f22fa2b6379af5c9b4e6588370ddbf4b2f1e3bce6bc6d31c446b084f

SHA512
72714f47663b8eb15f19f240c4c1625deb5fdb987e2e36056de307a34365aaa6f545280d8c2ecb9a78c01c0e8cc2c7a1b69019cde59c7cfd157ea09ebf963854

Download Submit
memory/912-12-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/912-15-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/4148-16-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/4756-0-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/4756-13-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download

Analysis

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