a38de83692d7ac44ef2dd0b155ef24a38ef5982924a66b7acfef7a37d69c816f

Analysis

max time kernel
119s
max time network
94s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
25/09/2024, 02:40

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General

Target
a38de83692d7ac44ef2dd0b155ef24a38ef5982924a66b7acfef7a37d69c816fN.exe
Size 48KB
Sample240925-c6dzfstbnb
SHA256 a38de83692d7ac44ef2dd0b155ef24a38ef5982924a66b7acfef7a37d69c816f
MD5 a7372187deac09372a7aba642c8c7510
SHA1 faaf5897cdfaf6e1477b5acb98a73931ade82ca4
SHA512 cd40225b1177eab9992813d96bcf6c3c232d40700cdfeaa3d2d6b17eee3da1fae58820cefc08ca8b0b66ce2b090ef920ae8e84ebd773bd9ea77db3e8d82b2e4e
SSDEEP 1536:DqMA6C1VqaqhtgVRNToV7TtRu8rM0wYVFl2g5u58dO0xXHQEyYfdhNhFO5h3xhI+:+MA6C1VqaqhtgVRNToV7TtRu8rM0wYVw
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

discovery persistence

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
4472	microsofthelp.exe

Executes dropped EXE 1 IoCs

pid	Process
4472	microsofthelp.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe"	a38de83692d7ac44ef2dd0b155ef24a38ef5982924a66b7acfef7a37d69c816fN.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\microsofthelp.exe	a38de83692d7ac44ef2dd0b155ef24a38ef5982924a66b7acfef7a37d69c816fN.exe

System Location Discovery: System Language Discovery 1 TTPs 2 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	a38de83692d7ac44ef2dd0b155ef24a38ef5982924a66b7acfef7a37d69c816fN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	microsofthelp.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3148 wrote to memory of 4472	3148	a38de83692d7ac44ef2dd0b155ef24a38ef5982924a66b7acfef7a37d69c816fN.exe	83
PID 3148 wrote to memory of 4472	3148	a38de83692d7ac44ef2dd0b155ef24a38ef5982924a66b7acfef7a37d69c816fN.exe	83
PID 3148 wrote to memory of 4472	3148	a38de83692d7ac44ef2dd0b155ef24a38ef5982924a66b7acfef7a37d69c816fN.exe	83

C:\Users\Admin\AppData\Local\Temp\a38de83692d7ac44ef2dd0b155ef24a38ef5982924a66b7acfef7a37d69c816fN.exe
"C:\Users\Admin\AppData\Local\Temp\a38de83692d7ac44ef2dd0b155ef24a38ef5982924a66b7acfef7a37d69c816fN.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3148
- C:\Windows\microsofthelp.exe
  "C:\Windows\microsofthelp.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:4472

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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 Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

microsofthelp.exe

Path C:\Windows\microsofthelp.exe
Size 48KB
SHA256 2e0f0ca04393bba0680d8855eb0ec3a1469745d1895da1bb451d0962b50c15ac
MD5 9efd7020298336434b5baeeb2a96c2ff
SHA1 7b9d4da0f093ae19421bfb96c02101b09e68a2f0
SHA512 41dd8597ef0fc12e5d8e949624ffb53fab339c10a555bae307b5ebe2ee853525d745cee33bc59147873526da3cb2573706baef60a5253ced2ce98d5f9201099f
SSDEEP 1536:DqMA6C1VqaqhtgVRNToV7TtRu8rM0wYVFl2g5u58dO0xXHQEyYfdhNhFO5h3xhIG:+MA6C1VqaqhtgVRNToV7TtRu8rM0wYVo
MD5 SHA1 SHA512 SSDEEP

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memory/3148-0-0x0000000000400000-0x0000000000403000-memory.dmp

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memory/3148-5-0x0000000000400000-0x0000000000403000-memory.dmp

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memory/4472-6-0x0000000000400000-0x0000000000403000-memory.dmp

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memory/4472-7-0x0000000000400000-0x0000000000403000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads