b7a12d38b0d732f492a88dd0030d1a74acb7ab08deddec4748dbe71bc35c3b43 | Triage

Sharing

General

Target

b7a12d38b0d732f492a88dd0030d1a74acb7ab08deddec4748dbe71bc35c3b43
Size

31KB
Sample

221203-hgy6zsch29
MD5

39484a4fd04b888af3c044b38b566368
SHA1

9606d927784b96847886f69d71a8e8e5339d0093
SHA256

b7a12d38b0d732f492a88dd0030d1a74acb7ab08deddec4748dbe71bc35c3b43
SHA512

1103a1370a15bdf2623c68dd346119de75f1b21983d730f95645ce3ec51733c75a4b2a2fb84f58c65f9ad9eea8f3ebe8afd480a22df091769399674035b57e99
SSDEEP

768:5ChZNkMc4hHQ2oNA9HaAHtYptHTzmcyxbipQVqpvzvgpDPELpz3:sNxcWwRNA9HaACpBT6cyx0NrgpDsp

Score

8^/10

bootkit persistence

Malware Config

Targets

- Target
  
  b7a12d38b0d732f492a88dd0030d1a74acb7ab08deddec4748dbe71bc35c3b43
- Size
  
  31KB
- MD5
  
  39484a4fd04b888af3c044b38b566368
- SHA1
  
  9606d927784b96847886f69d71a8e8e5339d0093
- SHA256
  
  b7a12d38b0d732f492a88dd0030d1a74acb7ab08deddec4748dbe71bc35c3b43
- SHA512
  
  1103a1370a15bdf2623c68dd346119de75f1b21983d730f95645ce3ec51733c75a4b2a2fb84f58c65f9ad9eea8f3ebe8afd480a22df091769399674035b57e99
- SSDEEP
  
  768:5ChZNkMc4hHQ2oNA9HaAHtYptHTzmcyxbipQVqpvzvgpDPELpz3:sNxcWwRNA9HaACpBT6cyx0NrgpDsp
Score

8^/10

bootkit persistence
- Executes dropped EXE
- Deletes itself
- Loads dropped DLL
- Adds Run key to start application
  persistence
- Writes to the Master Boot Record (MBR)
  Bootkits write to the MBR to gain persistence at a level below the operating system.
  bootkit persistence
- Drops file in System32 directory
- Suspicious use of SetThreadContext
behavioral1 behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

Bootkit

Privilege Escalation

Defense Evasion

Modify Registry

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks

static1

behavioral1

bootkitpersistence

behavioral2

bootkitpersistence