0b1a0881946f6e4d8b4af01f6bceb0737fc58282d098ae1c36c25c24c53a7deb

Resubmissions

18/01/2023, 14:08

230118-rfz7bsae2210

16/12/2022, 12:38

221216-pvfecsef977

Analysis

max time kernel
254s
max time network
257s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
16/12/2022, 12:38

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General

Target
BraveBrowserSetup.exe
Size 309.1MB
Sample221216-pvfecsef97
SHA256 bd06228669802c5ee2f00c900dd17efd1763780b17f05346d5ddcf6ead24297b
MD5 931195d97525e56b81273de435a1b23a
SHA1 a7b1888845db32aceb0c0d8a98a448e94ac95d0a
SHA512 c53b492d548f9cbd1f35aff646fe5344b141bf226aa78eb39c05914ff2704fd4cd9c5ed336967354b3311db487f60271374783ef6d485187ea714cd506912792
SSDEEP 24576:jgo+DDRIgvlC+pKc8zDkfxUXtWjPMBzuxK2:M5DDRISrxUcjPMBzuxv
MD5 SHA1 SHA512 SSDEEP

Score

5^/10

Malware Config

Signatures

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1216 set thread context of 268	1216	BraveBrowserSetup.exe	30

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
560	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1216	BraveBrowserSetup.exe
Token: SeDebugPrivilege	560	powershell.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 1216 wrote to memory of 560	1216	BraveBrowserSetup.exe	28
PID 1216 wrote to memory of 560	1216	BraveBrowserSetup.exe	28
PID 1216 wrote to memory of 560	1216	BraveBrowserSetup.exe	28
PID 1216 wrote to memory of 560	1216	BraveBrowserSetup.exe	28
PID 1216 wrote to memory of 268	1216	BraveBrowserSetup.exe	30
PID 1216 wrote to memory of 268	1216	BraveBrowserSetup.exe	30
PID 1216 wrote to memory of 268	1216	BraveBrowserSetup.exe	30
PID 1216 wrote to memory of 268	1216	BraveBrowserSetup.exe	30
PID 1216 wrote to memory of 268	1216	BraveBrowserSetup.exe	30
PID 1216 wrote to memory of 268	1216	BraveBrowserSetup.exe	30
PID 1216 wrote to memory of 268	1216	BraveBrowserSetup.exe	30
PID 1216 wrote to memory of 268	1216	BraveBrowserSetup.exe	30
PID 1216 wrote to memory of 268	1216	BraveBrowserSetup.exe	30
PID 1216 wrote to memory of 268	1216	BraveBrowserSetup.exe	30
PID 1216 wrote to memory of 268	1216	BraveBrowserSetup.exe	30
PID 1216 wrote to memory of 268	1216	BraveBrowserSetup.exe	30
PID 1216 wrote to memory of 268	1216	BraveBrowserSetup.exe	30

C:\Users\Admin\AppData\Local\Temp\BraveBrowserSetup.exe
"C:\Users\Admin\AppData\Local\Temp\BraveBrowserSetup.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1216
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:560
- C:\Users\Admin\AppData\Local\Temp\BraveBrowserSetup.exe
  C:\Users\Admin\AppData\Local\Temp\BraveBrowserSetup.exe
  2⤵
  PID:268

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/268-70-0x0000000000400000-0x000000000046B000-memory.dmp

Download

memory/268-72-0x0000000000400000-0x000000000046B000-memory.dmp

Download

memory/268-76-0x0000000000400000-0x000000000046B000-memory.dmp

Download

memory/268-75-0x0000000000400000-0x000000000046B000-memory.dmp

Download

memory/268-66-0x0000000000400000-0x000000000046B000-memory.dmp

Download

memory/268-68-0x0000000000400000-0x000000000046B000-memory.dmp

Download

memory/268-63-0x0000000000400000-0x000000000046B000-memory.dmp

Download

memory/268-64-0x0000000000400000-0x000000000046B000-memory.dmp

Download

memory/560-62-0x000000006F200000-0x000000006F7AB000-memory.dmp

Download

memory/560-61-0x000000006F200000-0x000000006F7AB000-memory.dmp

Download

memory/560-60-0x000000006F200000-0x000000006F7AB000-memory.dmp

Download

memory/1216-55-0x0000000004890000-0x0000000004950000-memory.dmp

Download

memory/1216-54-0x0000000000810000-0x00000000008D6000-memory.dmp

Download

memory/1216-57-0x0000000075D01000-0x0000000075D03000-memory.dmp

Download

memory/1216-56-0x0000000000780000-0x0000000000812000-memory.dmp

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