637b44ef49d87e54409e7b13a785969d8865a0b5a4ca1a2f1178e83b7913a18c

General

Target

637b44ef49d87e54409e7b13a785969d8865a0b5a4ca1a2f1178e83b7913a18c.exe
Size

238KB
MD5

174a0920f66c78f19d2eb61fed94bf8c
SHA1

7bca7aecf98151c63defaedd5911cad261ff860d
SHA256

637b44ef49d87e54409e7b13a785969d8865a0b5a4ca1a2f1178e83b7913a18c
SHA512

72020b2e653881b1afa3a1464d1c7f1623f475f7bfaaac517e008a9574daa19804e668c07d4e10dd3fff8463da92dd1da5643815c73980ca324dcf9d65dee0e4
SSDEEP

3072:lt5y3I0xY1ECtsY41XyGaALHPJ3XXbCDh2FmEhpedREm0xnqjiwlIrGhUwPp:pgTzCt/4OAB3nbCN2cSMbEm0xnqWN4Uw

Score

10^/10

evasion persistence trojan

Malware Config

Signatures

Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

Processes:

msiexec.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-575491160-2295418218-1540667289-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	msiexec.exe

UAC bypass 3 TTPs 1 IoCs
evasion trojan

Bypass User Account Control
T1088

Disabling Security Tools
T1089

Modify Registry
T1112

Processes:

msiexec.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" msiexec.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	msiexec.exe

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

msiexec.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\3328938880 = "C:\\PROGRA~3\\msvmzblc.exe"	msiexec.exe

Blocklisted process makes network request 8 IoCs

Processes:

msiexec.exe

flow pid process

2 1832 msiexec.exe
3 1832 msiexec.exe
4 1832 msiexec.exe
5 1832 msiexec.exe
6 1832 msiexec.exe
7 1832 msiexec.exe
8 1832 msiexec.exe
9 1832 msiexec.exe
Disables taskbar notifications via registry modification
evasion
Drops file in Program Files directory 1 IoCs

Processes:

msiexec.exe

description ioc process

File opened for modification C:\PROGRA~3\msvmzblc.exe msiexec.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

637b44ef49d87e54409e7b13a785969d8865a0b5a4ca1a2f1178e83b7913a18c.exemsiexec.exe

pid process

1716 637b44ef49d87e54409e7b13a785969d8865a0b5a4ca1a2f1178e83b7913a18c.exe
1832 msiexec.exe
1832 msiexec.exe

flow	pid	process
2	1832	msiexec.exe
3	1832	msiexec.exe
4	1832	msiexec.exe
5	1832	msiexec.exe
6	1832	msiexec.exe
7	1832	msiexec.exe
8	1832	msiexec.exe
9	1832	msiexec.exe

description	ioc	process
File opened for modification	C:\PROGRA~3\msvmzblc.exe	msiexec.exe

Suspicious behavior: MapViewOfSection 26 IoCs

Processes:

637b44ef49d87e54409e7b13a785969d8865a0b5a4ca1a2f1178e83b7913a18c.exemsiexec.exe

pid	process
1716	637b44ef49d87e54409e7b13a785969d8865a0b5a4ca1a2f1178e83b7913a18c.exe
1716	637b44ef49d87e54409e7b13a785969d8865a0b5a4ca1a2f1178e83b7913a18c.exe
1832	msiexec.exe
1832	msiexec.exe
1832	msiexec.exe
1832	msiexec.exe
1832	msiexec.exe
1832	msiexec.exe
1832	msiexec.exe
1832	msiexec.exe
1832	msiexec.exe
1832	msiexec.exe
1832	msiexec.exe
1832	msiexec.exe
1832	msiexec.exe
1832	msiexec.exe
1832	msiexec.exe
1832	msiexec.exe
1832	msiexec.exe
1832	msiexec.exe
1832	msiexec.exe
1832	msiexec.exe
1832	msiexec.exe
1832	msiexec.exe
1832	msiexec.exe
1832	msiexec.exe

Suspicious behavior: RenamesItself 1 IoCs

Processes:

msiexec.exe

pid process

1832 msiexec.exe

pid	process
1832	msiexec.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

637b44ef49d87e54409e7b13a785969d8865a0b5a4ca1a2f1178e83b7913a18c.exemsiexec.exe

description	pid	process
Token: SeDebugPrivilege	1716	637b44ef49d87e54409e7b13a785969d8865a0b5a4ca1a2f1178e83b7913a18c.exe
Token: SeBackupPrivilege	1716	637b44ef49d87e54409e7b13a785969d8865a0b5a4ca1a2f1178e83b7913a18c.exe
Token: SeRestorePrivilege	1716	637b44ef49d87e54409e7b13a785969d8865a0b5a4ca1a2f1178e83b7913a18c.exe
Token: SeDebugPrivilege	1832	msiexec.exe
Token: SeBackupPrivilege	1832	msiexec.exe
Token: SeRestorePrivilege	1832	msiexec.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

637b44ef49d87e54409e7b13a785969d8865a0b5a4ca1a2f1178e83b7913a18c.exe

description	pid	process	target process
PID 1716 wrote to memory of 1832	1716	637b44ef49d87e54409e7b13a785969d8865a0b5a4ca1a2f1178e83b7913a18c.exe	msiexec.exe
PID 1716 wrote to memory of 1832	1716	637b44ef49d87e54409e7b13a785969d8865a0b5a4ca1a2f1178e83b7913a18c.exe	msiexec.exe
PID 1716 wrote to memory of 1832	1716	637b44ef49d87e54409e7b13a785969d8865a0b5a4ca1a2f1178e83b7913a18c.exe	msiexec.exe
PID 1716 wrote to memory of 1832	1716	637b44ef49d87e54409e7b13a785969d8865a0b5a4ca1a2f1178e83b7913a18c.exe	msiexec.exe
PID 1716 wrote to memory of 1832	1716	637b44ef49d87e54409e7b13a785969d8865a0b5a4ca1a2f1178e83b7913a18c.exe	msiexec.exe
PID 1716 wrote to memory of 1832	1716	637b44ef49d87e54409e7b13a785969d8865a0b5a4ca1a2f1178e83b7913a18c.exe	msiexec.exe
PID 1716 wrote to memory of 1832	1716	637b44ef49d87e54409e7b13a785969d8865a0b5a4ca1a2f1178e83b7913a18c.exe	msiexec.exe

C:\Users\Admin\AppData\Local\Temp\637b44ef49d87e54409e7b13a785969d8865a0b5a4ca1a2f1178e83b7913a18c.exe
"C:\Users\Admin\AppData\Local\Temp\637b44ef49d87e54409e7b13a785969d8865a0b5a4ca1a2f1178e83b7913a18c.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1716
- C:\Windows\SysWOW64\msiexec.exe
  C:\Windows\SysWOW64\msiexec.exe
  2⤵
  - Modifies visiblity of hidden/system files in Explorer
  - UAC bypass
  - Adds policy Run key to start application
  - Blocklisted process makes network request
  - Drops file in Program Files directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious behavior: RenamesItself
  - Suspicious use of AdjustPrivilegeToken
  PID:1832

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

1

T1158

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Bypass User Account Control

1

T1088

Defense Evasion

Bypass User Account Control

1

T1088

Disabling Security Tools

1

T1089

Hidden Files and Directories

Modify Registry

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1716-54-0x0000000074E01000-0x0000000074E03000-memory.dmp

Filesize
8KB

Download
memory/1716-55-0x00000000023F0000-0x0000000002485000-memory.dmp

Filesize
596KB

Download
memory/1716-56-0x000000007EF90000-0x000000007EF96000-memory.dmp

Filesize
24KB

Download
memory/1716-59-0x00000000023F0000-0x0000000002485000-memory.dmp

Filesize
596KB

Download
memory/1832-57-0x0000000000000000-mapping.dmp

Download
memory/1832-60-0x0000000000FD0000-0x0000000000FE4000-memory.dmp

Filesize
80KB

Download
memory/1832-61-0x0000000000090000-0x0000000000095000-memory.dmp

Filesize
20KB

Download
memory/1832-62-0x000000007EF90000-0x000000007EF96000-memory.dmp

Filesize
24KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads