nitro | 3d782b5f5304e058161dce64bf27fc5c28af23675ce6db1fc46386fb8f532c2b

Resubmissions

22/02/2024, 23:54

240222-3x6k8agf4w10

22/02/2024, 23:49

240222-3vb9lagf2t10

21/02/2024, 19:26

240221-x5j5ased5910

Analysis

max time kernel
148s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
22/02/2024, 23:49

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General

Target
a064b524a661ce56c911fb3b184c1b8d.exe
Size 61KB
Sample240222-3vb9lagf2t
SHA256 3d782b5f5304e058161dce64bf27fc5c28af23675ce6db1fc46386fb8f532c2b
MD5 a064b524a661ce56c911fb3b184c1b8d
SHA1 a39aaf5834308ce443b56d80b7cf28ad9eb8f2f2
SHA512 397fd0aa5e5bbb37e2cc703a81335eabdeada48fde13e100b876e7fcd3c79218dc59e533f000e7dbb1e0dc9986d98617249d327c42e9c5b19f7aeb4e2f0a238b
SSDEEP 768:gnbyhKtnWoRxqf7GNI4r8YLDwUzc80gmq3oP/oDY:gnbRw7Gxpr/0O8/ok
MD5 SHA1 SHA512 SSDEEP

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 (85) 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-1-5-21-1790404759-2178872477-2616469472-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NR = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\a064b524a661ce56c911fb3b184c1b8d.exe\""	a064b524a661ce56c911fb3b184c1b8d.exe

Drops desktop.ini file(s) 5 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	a064b524a661ce56c911fb3b184c1b8d.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	a064b524a661ce56c911fb3b184c1b8d.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	a064b524a661ce56c911fb3b184c1b8d.exe
File opened for modification	C:\Users\Admin\Pictures\Camera Roll\desktop.ini	a064b524a661ce56c911fb3b184c1b8d.exe
File opened for modification	C:\Users\Admin\Pictures\Saved Pictures\desktop.ini	a064b524a661ce56c911fb3b184c1b8d.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 6 IoCs

Web Service

T1102

flow	ioc
30	discord.com
33	discord.com
34	discord.com
50	discord.com
27	discord.com
28	discord.com

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
24	api.ipify.org
26	api.ipify.org

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1790404759-2178872477-2616469472-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Roaming\\wallpaper.png"	a064b524a661ce56c911fb3b184c1b8d.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
552	1584	WerFault.exe	86
4356	1584	WerFault.exe	86

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1584	a064b524a661ce56c911fb3b184c1b8d.exe
1584	a064b524a661ce56c911fb3b184c1b8d.exe

Suspicious use of AdjustPrivilegeToken 43 IoCs

description	pid	Process
Token: SeDebugPrivilege	1584	a064b524a661ce56c911fb3b184c1b8d.exe
Token: SeIncreaseQuotaPrivilege	1536	WMIC.exe
Token: SeSecurityPrivilege	1536	WMIC.exe
Token: SeTakeOwnershipPrivilege	1536	WMIC.exe
Token: SeLoadDriverPrivilege	1536	WMIC.exe
Token: SeSystemProfilePrivilege	1536	WMIC.exe
Token: SeSystemtimePrivilege	1536	WMIC.exe
Token: SeProfSingleProcessPrivilege	1536	WMIC.exe
Token: SeIncBasePriorityPrivilege	1536	WMIC.exe
Token: SeCreatePagefilePrivilege	1536	WMIC.exe
Token: SeBackupPrivilege	1536	WMIC.exe
Token: SeRestorePrivilege	1536	WMIC.exe
Token: SeShutdownPrivilege	1536	WMIC.exe
Token: SeDebugPrivilege	1536	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1536	WMIC.exe
Token: SeRemoteShutdownPrivilege	1536	WMIC.exe
Token: SeUndockPrivilege	1536	WMIC.exe
Token: SeManageVolumePrivilege	1536	WMIC.exe
Token: 33	1536	WMIC.exe
Token: 34	1536	WMIC.exe
Token: 35	1536	WMIC.exe
Token: 36	1536	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1536	WMIC.exe
Token: SeSecurityPrivilege	1536	WMIC.exe
Token: SeTakeOwnershipPrivilege	1536	WMIC.exe
Token: SeLoadDriverPrivilege	1536	WMIC.exe
Token: SeSystemProfilePrivilege	1536	WMIC.exe
Token: SeSystemtimePrivilege	1536	WMIC.exe
Token: SeProfSingleProcessPrivilege	1536	WMIC.exe
Token: SeIncBasePriorityPrivilege	1536	WMIC.exe
Token: SeCreatePagefilePrivilege	1536	WMIC.exe
Token: SeBackupPrivilege	1536	WMIC.exe
Token: SeRestorePrivilege	1536	WMIC.exe
Token: SeShutdownPrivilege	1536	WMIC.exe
Token: SeDebugPrivilege	1536	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1536	WMIC.exe
Token: SeRemoteShutdownPrivilege	1536	WMIC.exe
Token: SeUndockPrivilege	1536	WMIC.exe
Token: SeManageVolumePrivilege	1536	WMIC.exe
Token: 33	1536	WMIC.exe
Token: 34	1536	WMIC.exe
Token: 35	1536	WMIC.exe
Token: 36	1536	WMIC.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1584 wrote to memory of 2020	1584	a064b524a661ce56c911fb3b184c1b8d.exe	89
PID 1584 wrote to memory of 2020	1584	a064b524a661ce56c911fb3b184c1b8d.exe	89
PID 1584 wrote to memory of 2020	1584	a064b524a661ce56c911fb3b184c1b8d.exe	89
PID 2020 wrote to memory of 1536	2020	cmd.exe	92
PID 2020 wrote to memory of 1536	2020	cmd.exe	92
PID 2020 wrote to memory of 1536	2020	cmd.exe	92

C:\Users\Admin\AppData\Local\Temp\a064b524a661ce56c911fb3b184c1b8d.exe
"C:\Users\Admin\AppData\Local\Temp\a064b524a661ce56c911fb3b184c1b8d.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:1584
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2020
- - C:\Windows\SysWOW64\Wbem\WMIC.exe
    wmic csproduct get uuid
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:1536
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1584 -s 1080
  2⤵
  - Program crash
  PID:552
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1584 -s 1716
  2⤵
  - Program crash
  PID:4356

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 1584 -ip 1584
1⤵
PID:3808

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 1584 -ip 1584
1⤵
PID:1372

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/1584-1-0x0000000074DF0000-0x00000000755A0000-memory.dmp

Download

memory/1584-0-0x0000000000330000-0x0000000000346000-memory.dmp

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memory/1584-2-0x0000000005230000-0x00000000057D4000-memory.dmp

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memory/1584-3-0x0000000004D30000-0x0000000004DC2000-memory.dmp

Download

memory/1584-4-0x0000000005040000-0x0000000005050000-memory.dmp

Download

memory/1584-43-0x0000000074DF0000-0x00000000755A0000-memory.dmp

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memory/1584-49-0x0000000005040000-0x0000000005050000-memory.dmp

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memory/1584-94-0x0000000006750000-0x000000000675A000-memory.dmp

Download

memory/1584-95-0x0000000074DF0000-0x00000000755A0000-memory.dmp

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