marsstealer | 200b2ed6014cf60dbc87aa964adc53304c9731a0ec90122383781b03bfb1f97a

General

Target

nfdsame.exe
Size

556KB
MD5

a98781c107b2ace080273819b6686301
SHA1

aec10de615dc75204d257ee743cdc0e0936e8bf9
SHA256

200b2ed6014cf60dbc87aa964adc53304c9731a0ec90122383781b03bfb1f97a
SHA512

cca490fe092d5b7215687daba47b8a79c54e3194af17e14200c544ce0cf24f5b9622611dd230e0111a59736961e836bb8b734bfadf893f3f1ebbf6ea0323f67a
SSDEEP

12288:7CL/WvnYDWT+oNnar+B4gyvY4U+UVHoQP2XjU:7CWYDWTXNnTB4gQU+6SU

Score

10^/10

marsstealer default discovery spyware stealer

Malware Config

Extracted

Family

marsstealer

Botnet

Default

C2

goldrushaw.ug/kanorgate.php

Signatures

Mars Stealer
An infostealer written in C++ based on other infostealers.
stealer marsstealer
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:

nfdsame.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-1101907861-274115917-2188613224-1000\Control Panel\International\Geo\Nation nfdsame.exe
Loads dropped DLL 2 IoCs

Processes:

nfdsame.exe

pid process

1408 nfdsame.exe
1408 nfdsame.exe
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
Suspicious use of SetThreadContext 1 IoCs

Processes:

nfdsame.exe

description pid process target process

PID 548 set thread context of 1408 548 nfdsame.exe nfdsame.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
Key value queried	\REGISTRY\USER\S-1-5-21-1101907861-274115917-2188613224-1000\Control Panel\International\Geo\Nation	nfdsame.exe

pid	process
1408	nfdsame.exe
1408	nfdsame.exe

description	pid	process	target process
PID 548 set thread context of 1408	548	nfdsame.exe	nfdsame.exe

Checks processor information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

nfdsame.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	nfdsame.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	nfdsame.exe

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

876 timeout.exe
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

nfdsame.exe

pid process

548 nfdsame.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

nfdsame.exe

pid process

548 nfdsame.exe

pid	process
876	timeout.exe

pid	process
548	nfdsame.exe

pid	process
548	nfdsame.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

nfdsame.exenfdsame.execmd.exe

description	pid	process	target process
PID 548 wrote to memory of 1408	548	nfdsame.exe	nfdsame.exe
PID 548 wrote to memory of 1408	548	nfdsame.exe	nfdsame.exe
PID 548 wrote to memory of 1408	548	nfdsame.exe	nfdsame.exe
PID 548 wrote to memory of 1408	548	nfdsame.exe	nfdsame.exe
PID 1408 wrote to memory of 4516	1408	nfdsame.exe	cmd.exe
PID 1408 wrote to memory of 4516	1408	nfdsame.exe	cmd.exe
PID 1408 wrote to memory of 4516	1408	nfdsame.exe	cmd.exe
PID 4516 wrote to memory of 876	4516	cmd.exe	timeout.exe
PID 4516 wrote to memory of 876	4516	cmd.exe	timeout.exe
PID 4516 wrote to memory of 876	4516	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\nfdsame.exe
"C:\Users\Admin\AppData\Local\Temp\nfdsame.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:548

C:\Users\Admin\AppData\Local\Temp\nfdsame.exe
"C:\Users\Admin\AppData\Local\Temp\nfdsame.exe"
2⤵
- Checks computer location settings
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:1408

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\nfdsame.exe" & exit
3⤵
- Suspicious use of WriteProcessMemory
PID:4516

C:\Windows\SysWOW64\timeout.exe
timeout /t 5
4⤵
- Delays execution with timeout.exe
PID:876

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

2

T1081

Discovery

Query Registry

3

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\ProgramData\mozglue.dll
Filesize
133KB

MD5
8f73c08a9660691143661bf7332c3c27

SHA1
37fa65dd737c50fda710fdbde89e51374d0c204a

SHA256
3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

SHA512
0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

Download Submit
C:\ProgramData\nss3.dll
Filesize
1.2MB

MD5
bfac4e3c5908856ba17d41edcd455a51

SHA1
8eec7e888767aa9e4cca8ff246eb2aacb9170428

SHA256
e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

SHA512
2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

Download Submit
memory/548-133-0x0000000000AC0000-0x0000000000AC8000-memory.dmp

Filesize
32KB

Download
memory/876-159-0x0000000000000000-mapping.dmp

Download
memory/1408-132-0x0000000000000000-mapping.dmp

Download
memory/1408-134-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/1408-135-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/1408-136-0x0000000060900000-0x0000000060992000-memory.dmp

Filesize
584KB

Download
memory/1408-158-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/4516-157-0x0000000000000000-mapping.dmp

Download

Analysis

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