nitro | ac8d46d555122c2f076e0804c0a588ee0f0a3183f6e4364394e5a4c61a1a10eb

Resubmissions

27-02-2024 22:28

240227-2dw21adb8v 10

27-02-2024 18:44

240227-xdt57agg8t 10

Analysis

max time kernel
446s
max time network
451s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
27-02-2024 22:28

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General

Target

a9e2ab65d7f6faa65564ad05c5227246.exe
Size

61KB
MD5

a9e2ab65d7f6faa65564ad05c5227246
SHA1

f08915e84cf8831ec354c161689057f8d5ba23a8
SHA256

ac8d46d555122c2f076e0804c0a588ee0f0a3183f6e4364394e5a4c61a1a10eb
SHA512

7cfb6e91d9da3a2c8918ede594e3387e6a6751cf13cb21cbbb664da33c132e47cf2cc86ad3587a668a0c53ef6c5a370d5751f50698ce6070383ed64a56661b85
SSDEEP

768:Z6gBoRjl0Gjru+A4YyYAwya9LDwUzc80gmq3oP/oDR:Z6Fl5jy+A0Yrywr/0O8/o9

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 (62) 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-1-5-21-2727153400-192325109-1870347593-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NR = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\a9e2ab65d7f6faa65564ad05c5227246.exe\""	a9e2ab65d7f6faa65564ad05c5227246.exe

Drops desktop.ini file(s) 5 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	a9e2ab65d7f6faa65564ad05c5227246.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	a9e2ab65d7f6faa65564ad05c5227246.exe
File opened for modification	C:\Users\Admin\Pictures\Camera Roll\desktop.ini	a9e2ab65d7f6faa65564ad05c5227246.exe
File opened for modification	C:\Users\Admin\Pictures\Saved Pictures\desktop.ini	a9e2ab65d7f6faa65564ad05c5227246.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	a9e2ab65d7f6faa65564ad05c5227246.exe

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

Web Service

T1102

flow	ioc
31	discord.com
32	discord.com
34	discord.com
35	discord.com
36	discord.com
52	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
27	api.ipify.org
28	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-1-5-21-2727153400-192325109-1870347593-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Roaming\\wallpaper.png"	a9e2ab65d7f6faa65564ad05c5227246.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
264	220	WerFault.exe	34
4788	220	WerFault.exe	34

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
220	a9e2ab65d7f6faa65564ad05c5227246.exe
220	a9e2ab65d7f6faa65564ad05c5227246.exe

Suspicious use of AdjustPrivilegeToken 43 IoCs

description	pid	Process
Token: SeDebugPrivilege	220	a9e2ab65d7f6faa65564ad05c5227246.exe
Token: SeIncreaseQuotaPrivilege	2252	WMIC.exe
Token: SeSecurityPrivilege	2252	WMIC.exe
Token: SeTakeOwnershipPrivilege	2252	WMIC.exe
Token: SeLoadDriverPrivilege	2252	WMIC.exe
Token: SeSystemProfilePrivilege	2252	WMIC.exe
Token: SeSystemtimePrivilege	2252	WMIC.exe
Token: SeProfSingleProcessPrivilege	2252	WMIC.exe
Token: SeIncBasePriorityPrivilege	2252	WMIC.exe
Token: SeCreatePagefilePrivilege	2252	WMIC.exe
Token: SeBackupPrivilege	2252	WMIC.exe
Token: SeRestorePrivilege	2252	WMIC.exe
Token: SeShutdownPrivilege	2252	WMIC.exe
Token: SeDebugPrivilege	2252	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2252	WMIC.exe
Token: SeRemoteShutdownPrivilege	2252	WMIC.exe
Token: SeUndockPrivilege	2252	WMIC.exe
Token: SeManageVolumePrivilege	2252	WMIC.exe
Token: 33	2252	WMIC.exe
Token: 34	2252	WMIC.exe
Token: 35	2252	WMIC.exe
Token: 36	2252	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2252	WMIC.exe
Token: SeSecurityPrivilege	2252	WMIC.exe
Token: SeTakeOwnershipPrivilege	2252	WMIC.exe
Token: SeLoadDriverPrivilege	2252	WMIC.exe
Token: SeSystemProfilePrivilege	2252	WMIC.exe
Token: SeSystemtimePrivilege	2252	WMIC.exe
Token: SeProfSingleProcessPrivilege	2252	WMIC.exe
Token: SeIncBasePriorityPrivilege	2252	WMIC.exe
Token: SeCreatePagefilePrivilege	2252	WMIC.exe
Token: SeBackupPrivilege	2252	WMIC.exe
Token: SeRestorePrivilege	2252	WMIC.exe
Token: SeShutdownPrivilege	2252	WMIC.exe
Token: SeDebugPrivilege	2252	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2252	WMIC.exe
Token: SeRemoteShutdownPrivilege	2252	WMIC.exe
Token: SeUndockPrivilege	2252	WMIC.exe
Token: SeManageVolumePrivilege	2252	WMIC.exe
Token: 33	2252	WMIC.exe
Token: 34	2252	WMIC.exe
Token: 35	2252	WMIC.exe
Token: 36	2252	WMIC.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 220 wrote to memory of 1084	220	a9e2ab65d7f6faa65564ad05c5227246.exe	86
PID 220 wrote to memory of 1084	220	a9e2ab65d7f6faa65564ad05c5227246.exe	86
PID 220 wrote to memory of 1084	220	a9e2ab65d7f6faa65564ad05c5227246.exe	86
PID 1084 wrote to memory of 2252	1084	cmd.exe	87
PID 1084 wrote to memory of 2252	1084	cmd.exe	87
PID 1084 wrote to memory of 2252	1084	cmd.exe	87

C:\Users\Admin\AppData\Local\Temp\a9e2ab65d7f6faa65564ad05c5227246.exe
"C:\Users\Admin\AppData\Local\Temp\a9e2ab65d7f6faa65564ad05c5227246.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:220
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1084
- - C:\Windows\SysWOW64\Wbem\WMIC.exe
    wmic csproduct get uuid
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2252
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 220 -s 2144
  2⤵
  - Program crash
  PID:264
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 220 -s 2144
  2⤵
  - Program crash
  PID:4788

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 220 -ip 220
1⤵
PID:3908

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 220 -ip 220
1⤵
PID:1500

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/220-0-0x00000000004F0000-0x0000000000506000-memory.dmp

Filesize
88KB

Download
memory/220-1-0x00000000747F0000-0x0000000074FA0000-memory.dmp

Filesize
7.7MB

Download
memory/220-2-0x00000000053A0000-0x0000000005944000-memory.dmp

Filesize
5.6MB

Download
memory/220-3-0x0000000004EE0000-0x0000000004F72000-memory.dmp

Filesize
584KB

Download
memory/220-4-0x0000000005160000-0x0000000005170000-memory.dmp

Filesize
64KB

Download
memory/220-21-0x00000000747F0000-0x0000000074FA0000-memory.dmp

Filesize
7.7MB

Download
memory/220-27-0x0000000005160000-0x0000000005170000-memory.dmp

Filesize
64KB

Download
memory/220-71-0x0000000000A50000-0x0000000000A5A000-memory.dmp

Filesize
40KB

Download
memory/220-72-0x00000000747F0000-0x0000000074FA0000-memory.dmp

Filesize
7.7MB

Download