9abbca071714ee9efbf6e3beebb7427822c4359836b28204583af5e24f4b8046

Analysis

max time kernel
122s
max time network
129s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
11/10/2023, 14:30

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General

Target

NEBULA OSC/NebulaOSC.exe
Size

1.5MB
MD5

d3afb4ad345f7dd766cf48f6c225b6c0
SHA1

81770566a842c3ef4ff306f2f9dbfde44e84d9eb
SHA256

fdd2f4e79f4970ca1bbdf4215e72483e43d4cc0f08e3932640c767c04fd41639
SHA512

621dafd13d2828d299b33790ad51bc315bb51c11187661605267dfe8355e7247848362c443bed47d7dc5ff9487fda8bed0186820c46cb67bfb526e3b147d703c
SSDEEP

49152:N/4M779Rck9tV5w1ZvLl7XrOOliyea7m:NdDUvLl7XrO/xAm

Score

6^/10

Malware Config

Signatures

Enumerates connected drives 3 TTPs 23 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\H:	NebulaOSC.exe
File opened (read-only)	\??\N:	NebulaOSC.exe
File opened (read-only)	\??\O:	NebulaOSC.exe
File opened (read-only)	\??\P:	NebulaOSC.exe
File opened (read-only)	\??\R:	NebulaOSC.exe
File opened (read-only)	\??\T:	NebulaOSC.exe
File opened (read-only)	\??\W:	NebulaOSC.exe
File opened (read-only)	\??\X:	NebulaOSC.exe
File opened (read-only)	\??\A:	NebulaOSC.exe
File opened (read-only)	\??\B:	NebulaOSC.exe
File opened (read-only)	\??\E:	NebulaOSC.exe
File opened (read-only)	\??\J:	NebulaOSC.exe
File opened (read-only)	\??\Q:	NebulaOSC.exe
File opened (read-only)	\??\V:	NebulaOSC.exe
File opened (read-only)	\??\I:	NebulaOSC.exe
File opened (read-only)	\??\U:	NebulaOSC.exe
File opened (read-only)	\??\Y:	NebulaOSC.exe
File opened (read-only)	\??\G:	NebulaOSC.exe
File opened (read-only)	\??\K:	NebulaOSC.exe
File opened (read-only)	\??\L:	NebulaOSC.exe
File opened (read-only)	\??\M:	NebulaOSC.exe
File opened (read-only)	\??\S:	NebulaOSC.exe
File opened (read-only)	\??\Z:	NebulaOSC.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2352	NebulaOSC.exe
Token: 33	2352	NebulaOSC.exe
Token: SeIncBasePriorityPrivilege	2352	NebulaOSC.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2352 wrote to memory of 2608	2352	NebulaOSC.exe	32
PID 2352 wrote to memory of 2608	2352	NebulaOSC.exe	32
PID 2352 wrote to memory of 2608	2352	NebulaOSC.exe	32

C:\Users\Admin\AppData\Local\Temp\NEBULA OSC\NebulaOSC.exe
"C:\Users\Admin\AppData\Local\Temp\NEBULA OSC\NebulaOSC.exe"
1⤵
- Enumerates connected drives
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2352
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 2352 -s 1564
  2⤵
  PID:2608

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2352-0-0x000007FEF57F0000-0x000007FEF61DC000-memory.dmp

Filesize
9.9MB

Download
memory/2352-1-0x00000000003F0000-0x000000000057A000-memory.dmp

Filesize
1.5MB

Download
memory/2352-2-0x000000001A7D0000-0x000000001A850000-memory.dmp

Filesize
512KB

Download
memory/2352-3-0x0000000000680000-0x0000000000681000-memory.dmp

Filesize
4KB

Download
memory/2352-4-0x0000000002210000-0x000000000222C000-memory.dmp

Filesize
112KB

Download
memory/2352-5-0x000000001A6F0000-0x000000001A748000-memory.dmp

Filesize
352KB

Download
memory/2352-6-0x000007FEF57F0000-0x000007FEF61DC000-memory.dmp

Filesize
9.9MB

Download
memory/2352-7-0x000007FEF6210000-0x000007FEF6601000-memory.dmp

Filesize
3.9MB

Download
memory/2352-8-0x000000001A7D0000-0x000000001A850000-memory.dmp

Filesize
512KB

Download
memory/2352-10-0x000007FEF6210000-0x000007FEF6601000-memory.dmp

Filesize
3.9MB

Download