616cdeaab536a1180a3d226c2f1e10ba80c52bc3bc44e184fcbb1d048b6b16a4

General

Target

616cdeaab536a1180a3d226c2f1e10ba80c52bc3bc44e184fcbb1d048b6b16a4.exe
Size

236KB
MD5

51f2fbddfceaa69a83edef696b29e267
SHA1

484b3aa227f93e8c396aa60dd0bb40258ce6502c
SHA256

616cdeaab536a1180a3d226c2f1e10ba80c52bc3bc44e184fcbb1d048b6b16a4
SHA512

051903898d4d18a4c843289943d3ece0aec5c047abb9e7c3ab4d58f1936a26bfd8e038230584ffc786a90e569802c64e3f9c2b9073208d660adcb4d8c1126982
SSDEEP

6144:3UA3ZiBnj579KiUpkYXUOfHpJhJGIPeZJJUAfhns22:kP4UYLGImrsZ

Score

10^/10

evasion persistence

Malware Config

Signatures

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

evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

Processes:

616cdeaab536a1180a3d226c2f1e10ba80c52bc3bc44e184fcbb1d048b6b16a4.exenigam.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	616cdeaab536a1180a3d226c2f1e10ba80c52bc3bc44e184fcbb1d048b6b16a4.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	nigam.exe

Executes dropped EXE 1 IoCs

Processes:

nigam.exe

pid process

1756 nigam.exe

pid	process
1756	nigam.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

616cdeaab536a1180a3d226c2f1e10ba80c52bc3bc44e184fcbb1d048b6b16a4.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	616cdeaab536a1180a3d226c2f1e10ba80c52bc3bc44e184fcbb1d048b6b16a4.exe

Adds Run key to start application 2 TTPs 13 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

616cdeaab536a1180a3d226c2f1e10ba80c52bc3bc44e184fcbb1d048b6b16a4.exenigam.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows\CurrentVersion\Run\	616cdeaab536a1180a3d226c2f1e10ba80c52bc3bc44e184fcbb1d048b6b16a4.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nigam = "C:\\Users\\Admin\\nigam.exe /p"	616cdeaab536a1180a3d226c2f1e10ba80c52bc3bc44e184fcbb1d048b6b16a4.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows\CurrentVersion\Run\	nigam.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nigam = "C:\\Users\\Admin\\nigam.exe /r"	nigam.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nigam = "C:\\Users\\Admin\\nigam.exe /i"	nigam.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nigam = "C:\\Users\\Admin\\nigam.exe /o"	nigam.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nigam = "C:\\Users\\Admin\\nigam.exe /d"	nigam.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nigam = "C:\\Users\\Admin\\nigam.exe /q"	nigam.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nigam = "C:\\Users\\Admin\\nigam.exe /v"	nigam.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nigam = "C:\\Users\\Admin\\nigam.exe /h"	nigam.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nigam = "C:\\Users\\Admin\\nigam.exe /z"	nigam.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nigam = "C:\\Users\\Admin\\nigam.exe /p"	nigam.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nigam = "C:\\Users\\Admin\\nigam.exe /a"	nigam.exe

Maps connected drives based on registry 3 TTPs 4 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

nigam.exe616cdeaab536a1180a3d226c2f1e10ba80c52bc3bc44e184fcbb1d048b6b16a4.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	nigam.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	616cdeaab536a1180a3d226c2f1e10ba80c52bc3bc44e184fcbb1d048b6b16a4.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	616cdeaab536a1180a3d226c2f1e10ba80c52bc3bc44e184fcbb1d048b6b16a4.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	nigam.exe

Drops autorun.inf file 1 TTPs 1 IoCs
Malware can abuse Windows Autorun to spread further via attached volumes.

Replication Through Removable Media
T1091

Processes:

nigam.exe

description ioc process

File opened for modification C:\Users\Admin\c\autorun.inf nigam.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	ioc	process
File opened for modification	C:\Users\Admin\c\autorun.inf	nigam.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

616cdeaab536a1180a3d226c2f1e10ba80c52bc3bc44e184fcbb1d048b6b16a4.exenigam.exe

pid	process
3852	616cdeaab536a1180a3d226c2f1e10ba80c52bc3bc44e184fcbb1d048b6b16a4.exe
3852	616cdeaab536a1180a3d226c2f1e10ba80c52bc3bc44e184fcbb1d048b6b16a4.exe
3852	616cdeaab536a1180a3d226c2f1e10ba80c52bc3bc44e184fcbb1d048b6b16a4.exe
3852	616cdeaab536a1180a3d226c2f1e10ba80c52bc3bc44e184fcbb1d048b6b16a4.exe
3852	616cdeaab536a1180a3d226c2f1e10ba80c52bc3bc44e184fcbb1d048b6b16a4.exe
3852	616cdeaab536a1180a3d226c2f1e10ba80c52bc3bc44e184fcbb1d048b6b16a4.exe
3852	616cdeaab536a1180a3d226c2f1e10ba80c52bc3bc44e184fcbb1d048b6b16a4.exe
3852	616cdeaab536a1180a3d226c2f1e10ba80c52bc3bc44e184fcbb1d048b6b16a4.exe
3852	616cdeaab536a1180a3d226c2f1e10ba80c52bc3bc44e184fcbb1d048b6b16a4.exe
3852	616cdeaab536a1180a3d226c2f1e10ba80c52bc3bc44e184fcbb1d048b6b16a4.exe
3852	616cdeaab536a1180a3d226c2f1e10ba80c52bc3bc44e184fcbb1d048b6b16a4.exe
3852	616cdeaab536a1180a3d226c2f1e10ba80c52bc3bc44e184fcbb1d048b6b16a4.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe
1756	nigam.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

616cdeaab536a1180a3d226c2f1e10ba80c52bc3bc44e184fcbb1d048b6b16a4.exenigam.exe

pid process

3852 616cdeaab536a1180a3d226c2f1e10ba80c52bc3bc44e184fcbb1d048b6b16a4.exe
1756 nigam.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

616cdeaab536a1180a3d226c2f1e10ba80c52bc3bc44e184fcbb1d048b6b16a4.exe

description	pid	process	target process
PID 3852 wrote to memory of 1756	3852	616cdeaab536a1180a3d226c2f1e10ba80c52bc3bc44e184fcbb1d048b6b16a4.exe	nigam.exe
PID 3852 wrote to memory of 1756	3852	616cdeaab536a1180a3d226c2f1e10ba80c52bc3bc44e184fcbb1d048b6b16a4.exe	nigam.exe
PID 3852 wrote to memory of 1756	3852	616cdeaab536a1180a3d226c2f1e10ba80c52bc3bc44e184fcbb1d048b6b16a4.exe	nigam.exe

C:\Users\Admin\AppData\Local\Temp\616cdeaab536a1180a3d226c2f1e10ba80c52bc3bc44e184fcbb1d048b6b16a4.exe
"C:\Users\Admin\AppData\Local\Temp\616cdeaab536a1180a3d226c2f1e10ba80c52bc3bc44e184fcbb1d048b6b16a4.exe"
1⤵
- Modifies visiblity of hidden/system files in Explorer
- Checks computer location settings
- Adds Run key to start application
- Maps connected drives based on registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3852

C:\Users\Admin\nigam.exe
"C:\Users\Admin\nigam.exe"
2⤵
- Modifies visiblity of hidden/system files in Explorer
- Executes dropped EXE
- Adds Run key to start application
- Maps connected drives based on registry
- Drops autorun.inf file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:1756

Network

MITRE ATT&CK Enterprise v6

Initial Access

Replication Through Removable Media

1

T1091

Execution

Persistence

Hidden Files and Directories

1

T1158

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Hidden Files and Directories

Modify Registry

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

3

T1082

Lateral Movement

Replication Through Removable Media

1

T1091

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\nigam.exe

Filesize
236KB

MD5
51f2fbddfceaa69a83edef696b29e267

SHA1
484b3aa227f93e8c396aa60dd0bb40258ce6502c

SHA256
616cdeaab536a1180a3d226c2f1e10ba80c52bc3bc44e184fcbb1d048b6b16a4

SHA512
051903898d4d18a4c843289943d3ece0aec5c047abb9e7c3ab4d58f1936a26bfd8e038230584ffc786a90e569802c64e3f9c2b9073208d660adcb4d8c1126982

Download Submit
C:\Users\Admin\nigam.exe

Filesize
236KB

MD5
51f2fbddfceaa69a83edef696b29e267

SHA1
484b3aa227f93e8c396aa60dd0bb40258ce6502c

SHA256
616cdeaab536a1180a3d226c2f1e10ba80c52bc3bc44e184fcbb1d048b6b16a4

SHA512
051903898d4d18a4c843289943d3ece0aec5c047abb9e7c3ab4d58f1936a26bfd8e038230584ffc786a90e569802c64e3f9c2b9073208d660adcb4d8c1126982

Download Submit
memory/1756-134-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads