nitro | 91c3da96316137cb43f02b9e11d82d07247e9d6eaf8fb8422035c4b9b2b8add0

Analysis

max time kernel
118s
max time network
121s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
17-01-2024 20:55

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General

Target

63959948baa9eaa4485b0eb2afff6e95.exe
Size

61KB
MD5

63959948baa9eaa4485b0eb2afff6e95
SHA1

f70971cc1a8352d96d1755e6230327de686814fc
SHA256

91c3da96316137cb43f02b9e11d82d07247e9d6eaf8fb8422035c4b9b2b8add0
SHA512

4ad40ba532ec49a4875f0632fba064327edc939d7aba5bce4d7f3d16cca31e7802fe2438504c1c0967b0fd589bc185818259de2f491f9108740f2424912edaf7
SSDEEP

768:uKsMqCXfVcWBzM9ZkiANIUMzYLDwUzc80gmq3oP/oD0:uKse5M9ZkiAP7r/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 (97) 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-1-5-21-452311807-3713411997-1028535425-1000\Software\Microsoft\Windows\CurrentVersion\Run\NR = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\63959948baa9eaa4485b0eb2afff6e95.exe\""	63959948baa9eaa4485b0eb2afff6e95.exe

Drops desktop.ini file(s) 3 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	63959948baa9eaa4485b0eb2afff6e95.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	63959948baa9eaa4485b0eb2afff6e95.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	63959948baa9eaa4485b0eb2afff6e95.exe

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
4	api.ipify.org
5	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-1-5-21-452311807-3713411997-1028535425-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Roaming\\wallpaper.png"	63959948baa9eaa4485b0eb2afff6e95.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-452311807-3713411997-1028535425-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Pictures\\My Wallpaper.jpg"	63959948baa9eaa4485b0eb2afff6e95.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2480	63959948baa9eaa4485b0eb2afff6e95.exe
2480	63959948baa9eaa4485b0eb2afff6e95.exe

Suspicious use of AdjustPrivilegeToken 41 IoCs

description	pid	Process
Token: SeDebugPrivilege	2480	63959948baa9eaa4485b0eb2afff6e95.exe
Token: SeIncreaseQuotaPrivilege	2704	WMIC.exe
Token: SeSecurityPrivilege	2704	WMIC.exe
Token: SeTakeOwnershipPrivilege	2704	WMIC.exe
Token: SeLoadDriverPrivilege	2704	WMIC.exe
Token: SeSystemProfilePrivilege	2704	WMIC.exe
Token: SeSystemtimePrivilege	2704	WMIC.exe
Token: SeProfSingleProcessPrivilege	2704	WMIC.exe
Token: SeIncBasePriorityPrivilege	2704	WMIC.exe
Token: SeCreatePagefilePrivilege	2704	WMIC.exe
Token: SeBackupPrivilege	2704	WMIC.exe
Token: SeRestorePrivilege	2704	WMIC.exe
Token: SeShutdownPrivilege	2704	WMIC.exe
Token: SeDebugPrivilege	2704	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2704	WMIC.exe
Token: SeRemoteShutdownPrivilege	2704	WMIC.exe
Token: SeUndockPrivilege	2704	WMIC.exe
Token: SeManageVolumePrivilege	2704	WMIC.exe
Token: 33	2704	WMIC.exe
Token: 34	2704	WMIC.exe
Token: 35	2704	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2704	WMIC.exe
Token: SeSecurityPrivilege	2704	WMIC.exe
Token: SeTakeOwnershipPrivilege	2704	WMIC.exe
Token: SeLoadDriverPrivilege	2704	WMIC.exe
Token: SeSystemProfilePrivilege	2704	WMIC.exe
Token: SeSystemtimePrivilege	2704	WMIC.exe
Token: SeProfSingleProcessPrivilege	2704	WMIC.exe
Token: SeIncBasePriorityPrivilege	2704	WMIC.exe
Token: SeCreatePagefilePrivilege	2704	WMIC.exe
Token: SeBackupPrivilege	2704	WMIC.exe
Token: SeRestorePrivilege	2704	WMIC.exe
Token: SeShutdownPrivilege	2704	WMIC.exe
Token: SeDebugPrivilege	2704	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2704	WMIC.exe
Token: SeRemoteShutdownPrivilege	2704	WMIC.exe
Token: SeUndockPrivilege	2704	WMIC.exe
Token: SeManageVolumePrivilege	2704	WMIC.exe
Token: 33	2704	WMIC.exe
Token: 34	2704	WMIC.exe
Token: 35	2704	WMIC.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2480 wrote to memory of 2668	2480	63959948baa9eaa4485b0eb2afff6e95.exe	28
PID 2480 wrote to memory of 2668	2480	63959948baa9eaa4485b0eb2afff6e95.exe	28
PID 2480 wrote to memory of 2668	2480	63959948baa9eaa4485b0eb2afff6e95.exe	28
PID 2480 wrote to memory of 2668	2480	63959948baa9eaa4485b0eb2afff6e95.exe	28
PID 2668 wrote to memory of 2704	2668	cmd.exe	30
PID 2668 wrote to memory of 2704	2668	cmd.exe	30
PID 2668 wrote to memory of 2704	2668	cmd.exe	30
PID 2668 wrote to memory of 2704	2668	cmd.exe	30

C:\Users\Admin\AppData\Local\Temp\63959948baa9eaa4485b0eb2afff6e95.exe
"C:\Users\Admin\AppData\Local\Temp\63959948baa9eaa4485b0eb2afff6e95.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:2480
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2668
- - C:\Windows\SysWOW64\Wbem\WMIC.exe
    wmic csproduct get uuid
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2704

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

Exfiltration

Impact

Defacement

T1491

Replay Monitor

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Downloads

memory/2480-0-0x0000000000A40000-0x0000000000A56000-memory.dmp

Filesize
88KB

Download
memory/2480-1-0x0000000074620000-0x0000000074D0E000-memory.dmp

Filesize
6.9MB

Download
memory/2480-2-0x0000000002220000-0x0000000002260000-memory.dmp

Filesize
256KB

Download
memory/2480-42-0x0000000074620000-0x0000000074D0E000-memory.dmp

Filesize
6.9MB

Download
memory/2480-48-0x0000000002220000-0x0000000002260000-memory.dmp

Filesize
256KB

Download
memory/2480-105-0x0000000002220000-0x0000000002260000-memory.dmp

Filesize
256KB

Download
memory/2480-106-0x0000000002220000-0x0000000002260000-memory.dmp

Filesize
256KB

Download