b620939376d091ef3ecaa29bc8d6ac1b00958a2b72fac8343b7c6a2bbbd8bd89

Analysis

max time kernel
149s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
27/07/2024, 02:41

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General

Target

b620939376d091ef3ecaa29bc8d6ac1b00958a2b72fac8343b7c6a2bbbd8bd89.exe
Size

46KB
MD5

688ea374209ec2b2ad12f92e2123efef
SHA1

cf3e888a7637674581c5ba5091b5f1f17749a577
SHA256

b620939376d091ef3ecaa29bc8d6ac1b00958a2b72fac8343b7c6a2bbbd8bd89
SHA512

df9e4eccc62e11152be7014a24a0989a985a29dc4b8bbb363663a40cbd8546481c78b8218ab724a0a1e778c6f9eaf7ababb6d84f5988c703da5d20fd6d0c0ccf
SSDEEP

768:DqPJtsA6C1VqahohtgVRNToV7TtRu8rM0wYVFl2g5coW58dO0xXHV2EfKYfdhNhh:DqMA6C1VqaqhtgVRNToV7TtRu8rM0wYB

Score

7^/10

discovery persistence

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
4900	microsofthelp.exe

Executes dropped EXE 1 IoCs

pid	Process
4900	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-1-5-21-464762018-485119342-1613148473-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe"	b620939376d091ef3ecaa29bc8d6ac1b00958a2b72fac8343b7c6a2bbbd8bd89.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\microsofthelp.exe	b620939376d091ef3ecaa29bc8d6ac1b00958a2b72fac8343b7c6a2bbbd8bd89.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	b620939376d091ef3ecaa29bc8d6ac1b00958a2b72fac8343b7c6a2bbbd8bd89.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	microsofthelp.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4428 wrote to memory of 4900	4428	b620939376d091ef3ecaa29bc8d6ac1b00958a2b72fac8343b7c6a2bbbd8bd89.exe	87
PID 4428 wrote to memory of 4900	4428	b620939376d091ef3ecaa29bc8d6ac1b00958a2b72fac8343b7c6a2bbbd8bd89.exe	87
PID 4428 wrote to memory of 4900	4428	b620939376d091ef3ecaa29bc8d6ac1b00958a2b72fac8343b7c6a2bbbd8bd89.exe	87

C:\Users\Admin\AppData\Local\Temp\b620939376d091ef3ecaa29bc8d6ac1b00958a2b72fac8343b7c6a2bbbd8bd89.exe
"C:\Users\Admin\AppData\Local\Temp\b620939376d091ef3ecaa29bc8d6ac1b00958a2b72fac8343b7c6a2bbbd8bd89.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4428
- C:\Windows\microsofthelp.exe
  "C:\Windows\microsofthelp.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:4900

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

C:\Windows\microsofthelp.exe

Filesize
47KB

MD5
c2894a73ef7df16f15c700263ddda773

SHA1
eb6a59a8db3c7cb360fbe2a4b04685cae1b241db

SHA256
12b624d588b9c2b023ca8cb0f470869746bf420e5c1b69c642cbcc79777c130b

SHA512
1c580545a969bc629941fbe49573d8a8092ecaae27067ac56b3322a0f327b167f73fdf7e69f0a5f96efb01c310f4ac1dec3b67b4afb209f0bc2f85cd13dbc184

Download Submit
memory/4428-0-0x0000000000400000-0x0000000000403000-memory.dmp

Filesize
12KB

Download
memory/4428-5-0x0000000000400000-0x0000000000403000-memory.dmp

Filesize
12KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads