nitro | 39c7f0761cb71570fc1a3dda81f18f97ac6d58e15b7b24cdadc9cf60dffd18a1

Analysis

max time kernel
144s
max time network
124s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
29-12-2023 21:17

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General

Target

043fbd84e0a00c3fbf71b88a3e2739bc.exe
Size

60KB
MD5

043fbd84e0a00c3fbf71b88a3e2739bc
SHA1

02f42bcab70e675d309a89b34125461cde1a7ea5
SHA256

39c7f0761cb71570fc1a3dda81f18f97ac6d58e15b7b24cdadc9cf60dffd18a1
SHA512

26506f5843c573f2b1a8c4923a4b38d83e998a6a34d1ce087e127a9099fb04f7baa5d6d4bc166ccd4094220054f569e54bac9403bd4944d62ca225bd0bc16660
SSDEEP

768:mOucKn7n1JXDNANIUNbvLDwUzc80gmq3oP/oDk:mO2XDNAPNr/0O8/og

Score

10^/10

nitro persistence ransomware spyware stealer

Malware Config

Signatures

Nitro
A ransomware that demands Discord nitro gift codes to decrypt files.
ransomware nitro
Renames multiple (79) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware
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
T1552.001

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Windows\CurrentVersion\Run\NR = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\043fbd84e0a00c3fbf71b88a3e2739bc.exe\""	043fbd84e0a00c3fbf71b88a3e2739bc.exe

Drops desktop.ini file(s) 3 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	043fbd84e0a00c3fbf71b88a3e2739bc.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	043fbd84e0a00c3fbf71b88a3e2739bc.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	043fbd84e0a00c3fbf71b88a3e2739bc.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
3	api.ipify.org
2	api.ipify.org

Sets desktop wallpaper using registry 2 TTPs 2 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Roaming\\wallpaper.png"	043fbd84e0a00c3fbf71b88a3e2739bc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Pictures\\My Wallpaper.jpg"	043fbd84e0a00c3fbf71b88a3e2739bc.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
532	043fbd84e0a00c3fbf71b88a3e2739bc.exe
532	043fbd84e0a00c3fbf71b88a3e2739bc.exe

Suspicious use of AdjustPrivilegeToken 41 IoCs

description	pid	Process
Token: SeDebugPrivilege	532	043fbd84e0a00c3fbf71b88a3e2739bc.exe
Token: SeIncreaseQuotaPrivilege	2824	WMIC.exe
Token: SeSecurityPrivilege	2824	WMIC.exe
Token: SeTakeOwnershipPrivilege	2824	WMIC.exe
Token: SeLoadDriverPrivilege	2824	WMIC.exe
Token: SeSystemProfilePrivilege	2824	WMIC.exe
Token: SeSystemtimePrivilege	2824	WMIC.exe
Token: SeProfSingleProcessPrivilege	2824	WMIC.exe
Token: SeIncBasePriorityPrivilege	2824	WMIC.exe
Token: SeCreatePagefilePrivilege	2824	WMIC.exe
Token: SeBackupPrivilege	2824	WMIC.exe
Token: SeRestorePrivilege	2824	WMIC.exe
Token: SeShutdownPrivilege	2824	WMIC.exe
Token: SeDebugPrivilege	2824	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2824	WMIC.exe
Token: SeRemoteShutdownPrivilege	2824	WMIC.exe
Token: SeUndockPrivilege	2824	WMIC.exe
Token: SeManageVolumePrivilege	2824	WMIC.exe
Token: 33	2824	WMIC.exe
Token: 34	2824	WMIC.exe
Token: 35	2824	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2824	WMIC.exe
Token: SeSecurityPrivilege	2824	WMIC.exe
Token: SeTakeOwnershipPrivilege	2824	WMIC.exe
Token: SeLoadDriverPrivilege	2824	WMIC.exe
Token: SeSystemProfilePrivilege	2824	WMIC.exe
Token: SeSystemtimePrivilege	2824	WMIC.exe
Token: SeProfSingleProcessPrivilege	2824	WMIC.exe
Token: SeIncBasePriorityPrivilege	2824	WMIC.exe
Token: SeCreatePagefilePrivilege	2824	WMIC.exe
Token: SeBackupPrivilege	2824	WMIC.exe
Token: SeRestorePrivilege	2824	WMIC.exe
Token: SeShutdownPrivilege	2824	WMIC.exe
Token: SeDebugPrivilege	2824	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2824	WMIC.exe
Token: SeRemoteShutdownPrivilege	2824	WMIC.exe
Token: SeUndockPrivilege	2824	WMIC.exe
Token: SeManageVolumePrivilege	2824	WMIC.exe
Token: 33	2824	WMIC.exe
Token: 34	2824	WMIC.exe
Token: 35	2824	WMIC.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 532 wrote to memory of 2712	532	043fbd84e0a00c3fbf71b88a3e2739bc.exe	27
PID 532 wrote to memory of 2712	532	043fbd84e0a00c3fbf71b88a3e2739bc.exe	27
PID 532 wrote to memory of 2712	532	043fbd84e0a00c3fbf71b88a3e2739bc.exe	27
PID 532 wrote to memory of 2712	532	043fbd84e0a00c3fbf71b88a3e2739bc.exe	27
PID 2712 wrote to memory of 2824	2712	cmd.exe	29
PID 2712 wrote to memory of 2824	2712	cmd.exe	29
PID 2712 wrote to memory of 2824	2712	cmd.exe	29
PID 2712 wrote to memory of 2824	2712	cmd.exe	29

C:\Users\Admin\AppData\Local\Temp\043fbd84e0a00c3fbf71b88a3e2739bc.exe
"C:\Users\Admin\AppData\Local\Temp\043fbd84e0a00c3fbf71b88a3e2739bc.exe"
1⤵
- Adds Run key to start application
- Drops desktop.ini file(s)
- Sets desktop wallpaper using registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:532
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2712
- - C:\Windows\SysWOW64\Wbem\WMIC.exe
    wmic csproduct get uuid
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2824

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Web Service

T1102

Exfiltration

Impact

Defacement

T1491

Replay Monitor

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Downloads

memory/532-0-0x0000000000F70000-0x0000000000F86000-memory.dmp

Filesize
88KB

Download
memory/532-1-0x0000000074DA0000-0x000000007548E000-memory.dmp

Filesize
6.9MB

Download
memory/532-2-0x0000000004C40000-0x0000000004C80000-memory.dmp

Filesize
256KB

Download
memory/532-3-0x0000000074DA0000-0x000000007548E000-memory.dmp

Filesize
6.9MB

Download
memory/532-4-0x0000000004C40000-0x0000000004C80000-memory.dmp

Filesize
256KB

Download
memory/532-87-0x0000000004C40000-0x0000000004C80000-memory.dmp

Filesize
256KB

Download
memory/532-88-0x0000000004C40000-0x0000000004C80000-memory.dmp

Filesize
256KB

Download