nefilim | 3730e9cba4a93bc985ef7cd2368ccbf5eccd4724f514b38b20e320e5553dd08d

Analysis

max time kernel
121s
max time network
124s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
25/03/2025, 13:01

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General

Target

2daa5144081dd288c1dc936ec27b1c8bd709633450ceb73f235fccd1c3d3c62e.exe
Size

70KB
MD5

193e702195e8ed5c50cc482569559462
SHA1

47a5307b78fa2c60c20ce63c553aef4a6d5a3e1c
SHA256

2daa5144081dd288c1dc936ec27b1c8bd709633450ceb73f235fccd1c3d3c62e
SHA512

d5ae5a8bccfc08bc07834caaebaed7a6cde1911170eb8de99322bf15be3ad111b5042d6401dcb06e64a6a429eee19d964878089af205474b377b77627bb63a35
SSDEEP

768:lXStkFWTBhyugDC60CPJkEBx9w7mSDh3vkkjvshT3ED18nv04ZPqpb348Uq1krHO:liMWV3gDCk6EBwT/kJbvkbuq1krj0z

Score

10^/10

nefilim discovery ransomware

Malware Config

Signatures

Nefilim
Ransomware first seen in early 2020 which shares code with the Nemty family. Rewritten in Golang in July 2020.
ransomware nefilim
Nefilim family
nefilim
Renames multiple (180) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

Deletes itself 1 IoCs

pid	Process
2828	cmd.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2daa5144081dd288c1dc936ec27b1c8bd709633450ceb73f235fccd1c3d3c62e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
2272	timeout.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2036 wrote to memory of 2828	2036	2daa5144081dd288c1dc936ec27b1c8bd709633450ceb73f235fccd1c3d3c62e.exe	31
PID 2036 wrote to memory of 2828	2036	2daa5144081dd288c1dc936ec27b1c8bd709633450ceb73f235fccd1c3d3c62e.exe	31
PID 2036 wrote to memory of 2828	2036	2daa5144081dd288c1dc936ec27b1c8bd709633450ceb73f235fccd1c3d3c62e.exe	31
PID 2036 wrote to memory of 2828	2036	2daa5144081dd288c1dc936ec27b1c8bd709633450ceb73f235fccd1c3d3c62e.exe	31
PID 2828 wrote to memory of 2272	2828	cmd.exe	33
PID 2828 wrote to memory of 2272	2828	cmd.exe	33
PID 2828 wrote to memory of 2272	2828	cmd.exe	33
PID 2828 wrote to memory of 2272	2828	cmd.exe	33

C:\Users\Admin\AppData\Local\Temp\2daa5144081dd288c1dc936ec27b1c8bd709633450ceb73f235fccd1c3d3c62e.exe
"C:\Users\Admin\AppData\Local\Temp\2daa5144081dd288c1dc936ec27b1c8bd709633450ceb73f235fccd1c3d3c62e.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2036
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout /t 3 /nobreak && del "C:\Users\Admin\AppData\Local\Temp\2daa5144081dd288c1dc936ec27b1c8bd709633450ceb73f235fccd1c3d3c62e.exe" /s /f /q
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2828
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 3 /nobreak
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2272

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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