nitro | 85f026e79d6d1008c6deec920762e3efb045aa7b1554fd1e063944c17d9a6c6a

Analysis

max time kernel
133s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
09-03-2024 21:30

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General

Target

bcd9ef95a12986a5dcbcb2a9095f98c7.exe
Size

61KB
MD5

bcd9ef95a12986a5dcbcb2a9095f98c7
SHA1

f71b4bbc2416ab75f5b889a936cd8a5b6932b705
SHA256

85f026e79d6d1008c6deec920762e3efb045aa7b1554fd1e063944c17d9a6c6a
SHA512

6adfb3364041c189034302c69b787d05ee671530d188a846c2c5dddc08e4ca054e1a3ecdf6406f0ccd66759b0a7f5a2b7669cd66dfe1ca048ca402c1ee1b0b4c
SSDEEP

768:MKsMqCXfVcWBTM9ZkiANIUsyPYLDwUzc80gmq3oP/oDi:MKseZM9ZkiAP2r/0O8/ou

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 (71) 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-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NR = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\bcd9ef95a12986a5dcbcb2a9095f98c7.exe\""	bcd9ef95a12986a5dcbcb2a9095f98c7.exe

Drops desktop.ini file(s) 5 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\Pictures\Camera Roll\desktop.ini	bcd9ef95a12986a5dcbcb2a9095f98c7.exe
File opened for modification	C:\Users\Admin\Pictures\Saved Pictures\desktop.ini	bcd9ef95a12986a5dcbcb2a9095f98c7.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	bcd9ef95a12986a5dcbcb2a9095f98c7.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	bcd9ef95a12986a5dcbcb2a9095f98c7.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	bcd9ef95a12986a5dcbcb2a9095f98c7.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
26	api.ipify.org
27	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-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Roaming\\wallpaper.png"	bcd9ef95a12986a5dcbcb2a9095f98c7.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1292	4936	WerFault.exe	85
4592	4936	WerFault.exe	85

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4936	bcd9ef95a12986a5dcbcb2a9095f98c7.exe
4936	bcd9ef95a12986a5dcbcb2a9095f98c7.exe

Suspicious use of AdjustPrivilegeToken 43 IoCs

description	pid	Process
Token: SeDebugPrivilege	4936	bcd9ef95a12986a5dcbcb2a9095f98c7.exe
Token: SeIncreaseQuotaPrivilege	3220	WMIC.exe
Token: SeSecurityPrivilege	3220	WMIC.exe
Token: SeTakeOwnershipPrivilege	3220	WMIC.exe
Token: SeLoadDriverPrivilege	3220	WMIC.exe
Token: SeSystemProfilePrivilege	3220	WMIC.exe
Token: SeSystemtimePrivilege	3220	WMIC.exe
Token: SeProfSingleProcessPrivilege	3220	WMIC.exe
Token: SeIncBasePriorityPrivilege	3220	WMIC.exe
Token: SeCreatePagefilePrivilege	3220	WMIC.exe
Token: SeBackupPrivilege	3220	WMIC.exe
Token: SeRestorePrivilege	3220	WMIC.exe
Token: SeShutdownPrivilege	3220	WMIC.exe
Token: SeDebugPrivilege	3220	WMIC.exe
Token: SeSystemEnvironmentPrivilege	3220	WMIC.exe
Token: SeRemoteShutdownPrivilege	3220	WMIC.exe
Token: SeUndockPrivilege	3220	WMIC.exe
Token: SeManageVolumePrivilege	3220	WMIC.exe
Token: 33	3220	WMIC.exe
Token: 34	3220	WMIC.exe
Token: 35	3220	WMIC.exe
Token: 36	3220	WMIC.exe
Token: SeIncreaseQuotaPrivilege	3220	WMIC.exe
Token: SeSecurityPrivilege	3220	WMIC.exe
Token: SeTakeOwnershipPrivilege	3220	WMIC.exe
Token: SeLoadDriverPrivilege	3220	WMIC.exe
Token: SeSystemProfilePrivilege	3220	WMIC.exe
Token: SeSystemtimePrivilege	3220	WMIC.exe
Token: SeProfSingleProcessPrivilege	3220	WMIC.exe
Token: SeIncBasePriorityPrivilege	3220	WMIC.exe
Token: SeCreatePagefilePrivilege	3220	WMIC.exe
Token: SeBackupPrivilege	3220	WMIC.exe
Token: SeRestorePrivilege	3220	WMIC.exe
Token: SeShutdownPrivilege	3220	WMIC.exe
Token: SeDebugPrivilege	3220	WMIC.exe
Token: SeSystemEnvironmentPrivilege	3220	WMIC.exe
Token: SeRemoteShutdownPrivilege	3220	WMIC.exe
Token: SeUndockPrivilege	3220	WMIC.exe
Token: SeManageVolumePrivilege	3220	WMIC.exe
Token: 33	3220	WMIC.exe
Token: 34	3220	WMIC.exe
Token: 35	3220	WMIC.exe
Token: 36	3220	WMIC.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4936 wrote to memory of 2216	4936	bcd9ef95a12986a5dcbcb2a9095f98c7.exe	90
PID 4936 wrote to memory of 2216	4936	bcd9ef95a12986a5dcbcb2a9095f98c7.exe	90
PID 4936 wrote to memory of 2216	4936	bcd9ef95a12986a5dcbcb2a9095f98c7.exe	90
PID 2216 wrote to memory of 3220	2216	cmd.exe	92
PID 2216 wrote to memory of 3220	2216	cmd.exe	92
PID 2216 wrote to memory of 3220	2216	cmd.exe	92

C:\Users\Admin\AppData\Local\Temp\bcd9ef95a12986a5dcbcb2a9095f98c7.exe
"C:\Users\Admin\AppData\Local\Temp\bcd9ef95a12986a5dcbcb2a9095f98c7.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:4936
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2216
- - C:\Windows\SysWOW64\Wbem\WMIC.exe
    wmic csproduct get uuid
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:3220
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4936 -s 2364
  2⤵
  - Program crash
  PID:1292
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4936 -s 2384
  2⤵
  - Program crash
  PID:4592

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4936 -ip 4936
1⤵
PID:2028

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4936 -ip 4936
1⤵
PID:3684

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/4936-0-0x0000000000BC0000-0x0000000000BD6000-memory.dmp

Filesize
88KB

Download
memory/4936-1-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/4936-2-0x0000000005AA0000-0x0000000006044000-memory.dmp

Filesize
5.6MB

Download
memory/4936-3-0x00000000055D0000-0x0000000005662000-memory.dmp

Filesize
584KB

Download
memory/4936-4-0x0000000005840000-0x0000000005850000-memory.dmp

Filesize
64KB

Download
memory/4936-30-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/4936-35-0x0000000005840000-0x0000000005850000-memory.dmp

Filesize
64KB

Download
memory/4936-80-0x0000000006400000-0x000000000640A000-memory.dmp

Filesize
40KB

Download
memory/4936-81-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download