nitro | 8b1c2384d904f25a64d3f35a84aa6e2e4cafa6cbba168e02a08741d6ddab9e7b

Analysis

max time kernel
118s
max time network
120s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
31-12-2023 05:45

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General

Target

2a851d7c8be29c5fc3bcd30329956ffe.exe
Size

62KB
MD5

2a851d7c8be29c5fc3bcd30329956ffe
SHA1

b33309e99079b063c8b4713246a5fc1f503ed3f1
SHA256

8b1c2384d904f25a64d3f35a84aa6e2e4cafa6cbba168e02a08741d6ddab9e7b
SHA512

443520245605686acbf43c9364a83752d7ab2679c7f0d351816036eec12c95d0b765fc0bb22846ff9e29150992180e5773cf1d675ee66b82d2f806bc83d12b9e
SSDEEP

768:VnbyqCXfVtfAD8TJWn0u7sANI4svYLDwUzc80gmq3oP/oDh:VnbEAD6WnzsAxfr/0O8/ol

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 (67) 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-1-5-21-3818056530-936619650-3554021955-1000\Software\Microsoft\Windows\CurrentVersion\Run\NR = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\2a851d7c8be29c5fc3bcd30329956ffe.exe\""	2a851d7c8be29c5fc3bcd30329956ffe.exe

Drops desktop.ini file(s) 3 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	2a851d7c8be29c5fc3bcd30329956ffe.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	2a851d7c8be29c5fc3bcd30329956ffe.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	2a851d7c8be29c5fc3bcd30329956ffe.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
2	api.ipify.org
3	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-1-5-21-3818056530-936619650-3554021955-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Pictures\\My Wallpaper.jpg"	2a851d7c8be29c5fc3bcd30329956ffe.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Roaming\\wallpaper.png"	2a851d7c8be29c5fc3bcd30329956ffe.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1752	2a851d7c8be29c5fc3bcd30329956ffe.exe
1752	2a851d7c8be29c5fc3bcd30329956ffe.exe

Suspicious use of AdjustPrivilegeToken 41 IoCs

description	pid	Process
Token: SeDebugPrivilege	1752	2a851d7c8be29c5fc3bcd30329956ffe.exe
Token: SeIncreaseQuotaPrivilege	1416	WMIC.exe
Token: SeSecurityPrivilege	1416	WMIC.exe
Token: SeTakeOwnershipPrivilege	1416	WMIC.exe
Token: SeLoadDriverPrivilege	1416	WMIC.exe
Token: SeSystemProfilePrivilege	1416	WMIC.exe
Token: SeSystemtimePrivilege	1416	WMIC.exe
Token: SeProfSingleProcessPrivilege	1416	WMIC.exe
Token: SeIncBasePriorityPrivilege	1416	WMIC.exe
Token: SeCreatePagefilePrivilege	1416	WMIC.exe
Token: SeBackupPrivilege	1416	WMIC.exe
Token: SeRestorePrivilege	1416	WMIC.exe
Token: SeShutdownPrivilege	1416	WMIC.exe
Token: SeDebugPrivilege	1416	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1416	WMIC.exe
Token: SeRemoteShutdownPrivilege	1416	WMIC.exe
Token: SeUndockPrivilege	1416	WMIC.exe
Token: SeManageVolumePrivilege	1416	WMIC.exe
Token: 33	1416	WMIC.exe
Token: 34	1416	WMIC.exe
Token: 35	1416	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1416	WMIC.exe
Token: SeSecurityPrivilege	1416	WMIC.exe
Token: SeTakeOwnershipPrivilege	1416	WMIC.exe
Token: SeLoadDriverPrivilege	1416	WMIC.exe
Token: SeSystemProfilePrivilege	1416	WMIC.exe
Token: SeSystemtimePrivilege	1416	WMIC.exe
Token: SeProfSingleProcessPrivilege	1416	WMIC.exe
Token: SeIncBasePriorityPrivilege	1416	WMIC.exe
Token: SeCreatePagefilePrivilege	1416	WMIC.exe
Token: SeBackupPrivilege	1416	WMIC.exe
Token: SeRestorePrivilege	1416	WMIC.exe
Token: SeShutdownPrivilege	1416	WMIC.exe
Token: SeDebugPrivilege	1416	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1416	WMIC.exe
Token: SeRemoteShutdownPrivilege	1416	WMIC.exe
Token: SeUndockPrivilege	1416	WMIC.exe
Token: SeManageVolumePrivilege	1416	WMIC.exe
Token: 33	1416	WMIC.exe
Token: 34	1416	WMIC.exe
Token: 35	1416	WMIC.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1752 wrote to memory of 2224	1752	2a851d7c8be29c5fc3bcd30329956ffe.exe	20
PID 1752 wrote to memory of 2224	1752	2a851d7c8be29c5fc3bcd30329956ffe.exe	20
PID 1752 wrote to memory of 2224	1752	2a851d7c8be29c5fc3bcd30329956ffe.exe	20
PID 1752 wrote to memory of 2224	1752	2a851d7c8be29c5fc3bcd30329956ffe.exe	20
PID 2224 wrote to memory of 1416	2224	cmd.exe	17
PID 2224 wrote to memory of 1416	2224	cmd.exe	17
PID 2224 wrote to memory of 1416	2224	cmd.exe	17
PID 2224 wrote to memory of 1416	2224	cmd.exe	17

C:\Users\Admin\AppData\Local\Temp\2a851d7c8be29c5fc3bcd30329956ffe.exe
"C:\Users\Admin\AppData\Local\Temp\2a851d7c8be29c5fc3bcd30329956ffe.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:1752
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2224

C:\Windows\SysWOW64\Wbem\WMIC.exe
wmic csproduct get uuid
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1416

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/1752-0-0x0000000001260000-0x0000000001276000-memory.dmp

Filesize
88KB

Download
memory/1752-1-0x00000000741E0000-0x00000000748CE000-memory.dmp

Filesize
6.9MB

Download
memory/1752-2-0x0000000000640000-0x0000000000680000-memory.dmp

Filesize
256KB

Download
memory/1752-19-0x00000000741E0000-0x00000000748CE000-memory.dmp

Filesize
6.9MB

Download
memory/1752-25-0x0000000000640000-0x0000000000680000-memory.dmp

Filesize
256KB

Download
memory/1752-75-0x0000000000640000-0x0000000000680000-memory.dmp

Filesize
256KB

Download
memory/1752-76-0x0000000000640000-0x0000000000680000-memory.dmp

Filesize
256KB

Download