b3fd750484fca838813e814db7d6491fea36abe889787fb7cf3fb29d9d9f5429

General

Target
b3fd750484fca838813e814db7d6491fea36abe889787fb7cf3fb29d9d9f5429.exe
Size 752KB
Sample201014-pxvqbjc53a
SHA256 b3fd750484fca838813e814db7d6491fea36abe889787fb7cf3fb29d9d9f5429
MD5 3ce32a576d51a4a78206d237770e35ea
SHA1 dddcb6d3aa5414c47075d4a2a77dcf0b270656d8
SHA512 618cb94c43a09c2f1ba35bf990dc5c2d5ed206079d39ba96952a193fbb2f5590ddef85037b2a236d7f5e7bc63dabdc67e45d4517518408f4a37c0dd393a4a2bc
MD5 SHA1 SHA512

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
284	FlashUpdate.exe
316	FlashUpdate.exe

Loads dropped DLL 2 IoCs

pid	Process
628	taskeng.exe
628	taskeng.exe

JavaScript code in executable 5 IoCs

resource	yara_rule
behavioral1/files/0x00040000000131b7-3.dat	js
behavioral1/files/0x00040000000131b7-5.dat	js
behavioral1/files/0x00040000000131b7-6.dat	js
behavioral1/files/0x00040000000131b7-8.dat	js
behavioral1/files/0x00040000000131b7-9.dat	js

Modifies system certificate store 2 TTPs 2 IoCs

Install Root Certificate

T1130

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13	b3fd750484fca838813e814db7d6491fea36abe889787fb7cf3fb29d9d9f5429.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13\Blob = 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	b3fd750484fca838813e814db7d6491fea36abe889787fb7cf3fb29d9d9f5429.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1152	b3fd750484fca838813e814db7d6491fea36abe889787fb7cf3fb29d9d9f5429.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1152	b3fd750484fca838813e814db7d6491fea36abe889787fb7cf3fb29d9d9f5429.exe
Token: SeDebugPrivilege	284	FlashUpdate.exe
Token: SeDebugPrivilege	316	FlashUpdate.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 628 wrote to memory of 284	628	taskeng.exe	30
PID 628 wrote to memory of 284	628	taskeng.exe	30
PID 628 wrote to memory of 284	628	taskeng.exe	30
PID 1152 wrote to memory of 1224	1152	b3fd750484fca838813e814db7d6491fea36abe889787fb7cf3fb29d9d9f5429.exe	20
PID 1152 wrote to memory of 1224	1152	b3fd750484fca838813e814db7d6491fea36abe889787fb7cf3fb29d9d9f5429.exe	20
PID 1152 wrote to memory of 1224	1152	b3fd750484fca838813e814db7d6491fea36abe889787fb7cf3fb29d9d9f5429.exe	20
PID 628 wrote to memory of 316	628	taskeng.exe	31
PID 628 wrote to memory of 316	628	taskeng.exe	31
PID 628 wrote to memory of 316	628	taskeng.exe	31

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1224
- C:\Users\Admin\AppData\Local\Temp\b3fd750484fca838813e814db7d6491fea36abe889787fb7cf3fb29d9d9f5429.exe
  "C:\Users\Admin\AppData\Local\Temp\b3fd750484fca838813e814db7d6491fea36abe889787fb7cf3fb29d9d9f5429.exe"
  2⤵
  - Modifies system certificate store
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1152

C:\Windows\system32\taskeng.exe
taskeng.exe {70559AFB-5E2A-44DA-8B39-8BE6F78B7898} S-1-5-21-1131729243-447456001-3632642222-1000:AVGLFESB\Admin:Interactive:[1]
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:628
- C:\Users\Admin\AppData\Local\Temp\FlashUpdate.exe
  C:\Users\Admin\AppData\Local\Temp\FlashUpdate.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:284
- C:\Users\Admin\AppData\Local\Temp\FlashUpdate.exe
  C:\Users\Admin\AppData\Local\Temp\FlashUpdate.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:316

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Install Root Certificate

Modify Registry

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/284-10-0x000007FEF5630000-0x000007FEF601C000-memory.dmp

Download

memory/316-13-0x000007FEF5630000-0x000007FEF601C000-memory.dmp

Download

memory/1152-0-0x000007FEF5630000-0x000007FEF601C000-memory.dmp

Download

memory/1152-1-0x0000000000440000-0x0000000000449000-memory.dmp

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads