nitro | 3d782b5f5304e058161dce64bf27fc5c28af23675ce6db1fc46386fb8f532c2b

Resubmissions

22-02-2024 23:54

240222-3x6k8agf4w 10

22-02-2024 23:49

240222-3vb9lagf2t 10

21-02-2024 19:26

240221-x5j5ased59 10

Analysis

max time kernel
92s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
21-02-2024 19:26

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General

Target

a064b524a661ce56c911fb3b184c1b8d.exe
Size

61KB
MD5

a064b524a661ce56c911fb3b184c1b8d
SHA1

a39aaf5834308ce443b56d80b7cf28ad9eb8f2f2
SHA256

3d782b5f5304e058161dce64bf27fc5c28af23675ce6db1fc46386fb8f532c2b
SHA512

397fd0aa5e5bbb37e2cc703a81335eabdeada48fde13e100b876e7fcd3c79218dc59e533f000e7dbb1e0dc9986d98617249d327c42e9c5b19f7aeb4e2f0a238b
SSDEEP

768:gnbyhKtnWoRxqf7GNI4r8YLDwUzc80gmq3oP/oDY:gnbRw7Gxpr/0O8/ok

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 (82) 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-1-5-21-3316742141-2240921845-2885234760-1000\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\Documents\desktop.ini	a064b524a661ce56c911fb3b184c1b8d.exe
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\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
15	discord.com
16	discord.com
21	discord.com
23	discord.com
26	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
11	api.ipify.org
10	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-1-5-21-3316742141-2240921845-2885234760-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Roaming\\wallpaper.png"	a064b524a661ce56c911fb3b184c1b8d.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3788	1040	WerFault.exe	27
764	1040	WerFault.exe	27

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1040	a064b524a661ce56c911fb3b184c1b8d.exe
1040	a064b524a661ce56c911fb3b184c1b8d.exe

Suspicious use of AdjustPrivilegeToken 43 IoCs

description	pid	Process
Token: SeDebugPrivilege	1040	a064b524a661ce56c911fb3b184c1b8d.exe
Token: SeIncreaseQuotaPrivilege	4640	WMIC.exe
Token: SeSecurityPrivilege	4640	WMIC.exe
Token: SeTakeOwnershipPrivilege	4640	WMIC.exe
Token: SeLoadDriverPrivilege	4640	WMIC.exe
Token: SeSystemProfilePrivilege	4640	WMIC.exe
Token: SeSystemtimePrivilege	4640	WMIC.exe
Token: SeProfSingleProcessPrivilege	4640	WMIC.exe
Token: SeIncBasePriorityPrivilege	4640	WMIC.exe
Token: SeCreatePagefilePrivilege	4640	WMIC.exe
Token: SeBackupPrivilege	4640	WMIC.exe
Token: SeRestorePrivilege	4640	WMIC.exe
Token: SeShutdownPrivilege	4640	WMIC.exe
Token: SeDebugPrivilege	4640	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4640	WMIC.exe
Token: SeRemoteShutdownPrivilege	4640	WMIC.exe
Token: SeUndockPrivilege	4640	WMIC.exe
Token: SeManageVolumePrivilege	4640	WMIC.exe
Token: 33	4640	WMIC.exe
Token: 34	4640	WMIC.exe
Token: 35	4640	WMIC.exe
Token: 36	4640	WMIC.exe
Token: SeIncreaseQuotaPrivilege	4640	WMIC.exe
Token: SeSecurityPrivilege	4640	WMIC.exe
Token: SeTakeOwnershipPrivilege	4640	WMIC.exe
Token: SeLoadDriverPrivilege	4640	WMIC.exe
Token: SeSystemProfilePrivilege	4640	WMIC.exe
Token: SeSystemtimePrivilege	4640	WMIC.exe
Token: SeProfSingleProcessPrivilege	4640	WMIC.exe
Token: SeIncBasePriorityPrivilege	4640	WMIC.exe
Token: SeCreatePagefilePrivilege	4640	WMIC.exe
Token: SeBackupPrivilege	4640	WMIC.exe
Token: SeRestorePrivilege	4640	WMIC.exe
Token: SeShutdownPrivilege	4640	WMIC.exe
Token: SeDebugPrivilege	4640	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4640	WMIC.exe
Token: SeRemoteShutdownPrivilege	4640	WMIC.exe
Token: SeUndockPrivilege	4640	WMIC.exe
Token: SeManageVolumePrivilege	4640	WMIC.exe
Token: 33	4640	WMIC.exe
Token: 34	4640	WMIC.exe
Token: 35	4640	WMIC.exe
Token: 36	4640	WMIC.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1040 wrote to memory of 4696	1040	a064b524a661ce56c911fb3b184c1b8d.exe	87
PID 1040 wrote to memory of 4696	1040	a064b524a661ce56c911fb3b184c1b8d.exe	87
PID 1040 wrote to memory of 4696	1040	a064b524a661ce56c911fb3b184c1b8d.exe	87
PID 4696 wrote to memory of 4640	4696	cmd.exe	89
PID 4696 wrote to memory of 4640	4696	cmd.exe	89
PID 4696 wrote to memory of 4640	4696	cmd.exe	89

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:1040
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4696
- - C:\Windows\SysWOW64\Wbem\WMIC.exe
    wmic csproduct get uuid
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:4640
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1040 -s 2108
  2⤵
  - Program crash
  PID:3788
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1040 -s 2108
  2⤵
  - Program crash
  PID:764

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 1040 -ip 1040
1⤵
PID:2652

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 1040 -ip 1040
1⤵
PID:2380

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/1040-0-0x0000000000580000-0x0000000000596000-memory.dmp

Filesize
88KB

Download
memory/1040-1-0x0000000075370000-0x0000000075B20000-memory.dmp

Filesize
7.7MB

Download
memory/1040-2-0x0000000005430000-0x00000000059D4000-memory.dmp

Filesize
5.6MB

Download
memory/1040-3-0x0000000004F80000-0x0000000005012000-memory.dmp

Filesize
584KB

Download
memory/1040-4-0x0000000004F70000-0x0000000004F80000-memory.dmp

Filesize
64KB

Download
memory/1040-66-0x0000000075370000-0x0000000075B20000-memory.dmp

Filesize
7.7MB

Download
memory/1040-76-0x0000000004F70000-0x0000000004F80000-memory.dmp

Filesize
64KB

Download
memory/1040-91-0x0000000005CD0000-0x0000000005CDA000-memory.dmp

Filesize
40KB

Download
memory/1040-92-0x0000000075370000-0x0000000075B20000-memory.dmp

Filesize
7.7MB

Download