ab5e63bbe7e95f9356b35f6c87af7ec927329d80af7122c70746b0484a6304f1

Analysis

max time kernel
133s
max time network
138s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
05/12/2022, 09:24

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General

Target

ab5e63bbe7e95f9356b35f6c87af7ec927329d80af7122c70746b0484a6304f1.exe
Size

316KB
MD5

5f91ab6e31f4f4423f7987b35230350c
SHA1

0e5244ef267b259367f9032de9540a9781ecc5cb
SHA256

ab5e63bbe7e95f9356b35f6c87af7ec927329d80af7122c70746b0484a6304f1
SHA512

a2130946d0eaf19371bddb768d6317b0d2f6292bb3287c6552500b09f184c6de8d838dd01f7f36206b2bb7ad696e24ad016c7d2f116ab75404c69f2f92cec355
SSDEEP

6144:w4gSQo4KlunQhQ4I/00EYwFqbamGVsjmbxaAY3KtEav1033:/oQgsistHtK2y33

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4220	mssecrer.exe

Adds Run key 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-1-5-21-2891029575-1462575-1165213807-1000\softWare\Microsoft\Windows\CurrentVersion\rUN	ab5e63bbe7e95f9356b35f6c87af7ec927329d80af7122c70746b0484a6304f1.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mssecrer.exe = "C:\\Windows\\mssecrer.exe"	ab5e63bbe7e95f9356b35f6c87af7ec927329d80af7122c70746b0484a6304f1.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4220 set thread context of 1356	4220	mssecrer.exe	80

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\mssecrer.exe	ab5e63bbe7e95f9356b35f6c87af7ec927329d80af7122c70746b0484a6304f1.exe
File opened for modification	C:\Windows\mssecrer.exe	ab5e63bbe7e95f9356b35f6c87af7ec927329d80af7122c70746b0484a6304f1.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4364	1356	WerFault.exe	80

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5040	ab5e63bbe7e95f9356b35f6c87af7ec927329d80af7122c70746b0484a6304f1.exe
Token: SeDebugPrivilege	4220	mssecrer.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 5040 wrote to memory of 4220	5040	ab5e63bbe7e95f9356b35f6c87af7ec927329d80af7122c70746b0484a6304f1.exe	79
PID 5040 wrote to memory of 4220	5040	ab5e63bbe7e95f9356b35f6c87af7ec927329d80af7122c70746b0484a6304f1.exe	79
PID 5040 wrote to memory of 4220	5040	ab5e63bbe7e95f9356b35f6c87af7ec927329d80af7122c70746b0484a6304f1.exe	79
PID 4220 wrote to memory of 1356	4220	mssecrer.exe	80
PID 4220 wrote to memory of 1356	4220	mssecrer.exe	80
PID 4220 wrote to memory of 1356	4220	mssecrer.exe	80
PID 4220 wrote to memory of 1356	4220	mssecrer.exe	80
PID 4220 wrote to memory of 1356	4220	mssecrer.exe	80

C:\Users\Admin\AppData\Local\Temp\ab5e63bbe7e95f9356b35f6c87af7ec927329d80af7122c70746b0484a6304f1.exe
"C:\Users\Admin\AppData\Local\Temp\ab5e63bbe7e95f9356b35f6c87af7ec927329d80af7122c70746b0484a6304f1.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5040
- C:\Windows\mssecrer.exe
  C:\Windows\mssecrer.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4220
- - C:\WINDOWS\SysWOW64\svchost.exe
    C:\WINDOWS\system32\svchost.exe
    3⤵
    PID:1356
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1356 -s 12
      4⤵
      Program crash
      PID:4364

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1356 -ip 1356
1⤵
PID:1328

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

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\mssecrer.exe

Filesize
316KB

MD5
5f91ab6e31f4f4423f7987b35230350c

SHA1
0e5244ef267b259367f9032de9540a9781ecc5cb

SHA256
ab5e63bbe7e95f9356b35f6c87af7ec927329d80af7122c70746b0484a6304f1

SHA512
a2130946d0eaf19371bddb768d6317b0d2f6292bb3287c6552500b09f184c6de8d838dd01f7f36206b2bb7ad696e24ad016c7d2f116ab75404c69f2f92cec355

Download Submit
C:\Windows\mssecrer.exe

Filesize
316KB

MD5
5f91ab6e31f4f4423f7987b35230350c

SHA1
0e5244ef267b259367f9032de9540a9781ecc5cb

SHA256
ab5e63bbe7e95f9356b35f6c87af7ec927329d80af7122c70746b0484a6304f1

SHA512
a2130946d0eaf19371bddb768d6317b0d2f6292bb3287c6552500b09f184c6de8d838dd01f7f36206b2bb7ad696e24ad016c7d2f116ab75404c69f2f92cec355

Download Submit
memory/1356-137-0x0000000000400000-0x0000000000518000-memory.dmp

Filesize
1.1MB

Download
memory/4220-138-0x0000000000400000-0x0000000000518000-memory.dmp

Filesize
1.1MB

Download
memory/5040-132-0x0000000000400000-0x0000000000518000-memory.dmp

Filesize
1.1MB

Download
memory/5040-139-0x0000000000400000-0x0000000000518000-memory.dmp

Filesize
1.1MB

Download