6c055ad1d7d54b5eb0d13e16d55e740db81028913b81a3c00bdfaa2ebb66b645

Analysis

max time kernel
122s
max time network
130s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
06/01/2024, 04:03

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General

Target

453b55c4edcb63c6cf3b2077b5d88991.exe
Size

14KB
MD5

453b55c4edcb63c6cf3b2077b5d88991
SHA1

3c9a1f1b0aaf2b6c5dc52a365afa9461107c0845
SHA256

6c055ad1d7d54b5eb0d13e16d55e740db81028913b81a3c00bdfaa2ebb66b645
SHA512

eacd69417e7d0e29ec8bcb5f36a65f4daf8ac0b562b79a7491afde0d92b0fdeb1665d03f10aacffb6ae720cbf22dcaff85eb49c1a86d67595b3e1b313c4f3e54
SSDEEP

192:Tb61S4bEpynRZtRjzDbiZlOWiknlLfP1oynlY2+IXesWnLM:3jBynRZtRPql/nlb1Y2+BsWL

Score

7^/10

persistence

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2644	msccrt.exe

Executes dropped EXE 1 IoCs

pid	Process
2644	msccrt.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\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\msccrt = "C:\\Windows\\msccrt.exe"	msccrt.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\msccrt.dll	msccrt.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\msccrt.exe	453b55c4edcb63c6cf3b2077b5d88991.exe
File opened for modification	C:\Windows\msccrt.exe	453b55c4edcb63c6cf3b2077b5d88991.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2644	msccrt.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1620	453b55c4edcb63c6cf3b2077b5d88991.exe
Token: SeDebugPrivilege	2644	msccrt.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1620 wrote to memory of 2644	1620	453b55c4edcb63c6cf3b2077b5d88991.exe	28
PID 1620 wrote to memory of 2644	1620	453b55c4edcb63c6cf3b2077b5d88991.exe	28
PID 1620 wrote to memory of 2644	1620	453b55c4edcb63c6cf3b2077b5d88991.exe	28
PID 1620 wrote to memory of 2644	1620	453b55c4edcb63c6cf3b2077b5d88991.exe	28
PID 2644 wrote to memory of 1240	2644	msccrt.exe	21
PID 2644 wrote to memory of 1240	2644	msccrt.exe	21

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1240
- C:\Users\Admin\AppData\Local\Temp\453b55c4edcb63c6cf3b2077b5d88991.exe
  "C:\Users\Admin\AppData\Local\Temp\453b55c4edcb63c6cf3b2077b5d88991.exe"
  2⤵
  - Drops file in Windows directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1620
- - C:\Windows\msccrt.exe
    C:\Windows\msccrt.exe @C:\Users\Admin\AppData\Local\Temp\453b55c4edcb63c6cf3b2077b5d88991.exe@1620
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Adds Run key to start application
    - Drops file in System32 directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2644

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\msccrt.exe

Filesize
14KB

MD5
453b55c4edcb63c6cf3b2077b5d88991

SHA1
3c9a1f1b0aaf2b6c5dc52a365afa9461107c0845

SHA256
6c055ad1d7d54b5eb0d13e16d55e740db81028913b81a3c00bdfaa2ebb66b645

SHA512
eacd69417e7d0e29ec8bcb5f36a65f4daf8ac0b562b79a7491afde0d92b0fdeb1665d03f10aacffb6ae720cbf22dcaff85eb49c1a86d67595b3e1b313c4f3e54

Download Submit
memory/1240-7-0x0000000002B80000-0x0000000002B81000-memory.dmp

Filesize
4KB

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