3557b40fe27beb221cbd1f1376a1fcf359775891ac3bf5d4d03ba45b7d16878b

General

Target

3557b40fe27beb221cbd1f1376a1fcf359775891ac3bf5d4d03ba45b7d16878b.exe
Size

6.0MB
MD5

42979249e85a0ef1f6c0e4e7a2ab8b13
SHA1

65159abf134bc0578e6bee9efa67cef63fee6199
SHA256

3557b40fe27beb221cbd1f1376a1fcf359775891ac3bf5d4d03ba45b7d16878b
SHA512

50ed8037ef3904833a323ed169cb269ef622e4209b2ccd2c34ea8f848c9ab53bbf01e26cba7839288225e0204df58b4e073aa13cfab74feb8206f64d18772bcf
SSDEEP

98304:9+G5NKbORL0dqUFFKtm3AhVOyTUATEPhsCf0z1ZMdxE5ofgK/tSaZkLCGYVXVfp:AGiqRhpQAaC+xE5IH/LZuCnf

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1844	quickassist.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs

pid	Process
532	3557b40fe27beb221cbd1f1376a1fcf359775891ac3bf5d4d03ba45b7d16878b.exe
532	3557b40fe27beb221cbd1f1376a1fcf359775891ac3bf5d4d03ba45b7d16878b.exe
1844	quickassist.exe
1844	quickassist.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1104	532	WerFault.exe	27

Creates scheduled task(s) 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
1716	schtasks.exe
688	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
532	3557b40fe27beb221cbd1f1376a1fcf359775891ac3bf5d4d03ba45b7d16878b.exe
1844	quickassist.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 532 wrote to memory of 1716	532	3557b40fe27beb221cbd1f1376a1fcf359775891ac3bf5d4d03ba45b7d16878b.exe	28
PID 532 wrote to memory of 1716	532	3557b40fe27beb221cbd1f1376a1fcf359775891ac3bf5d4d03ba45b7d16878b.exe	28
PID 532 wrote to memory of 1716	532	3557b40fe27beb221cbd1f1376a1fcf359775891ac3bf5d4d03ba45b7d16878b.exe	28
PID 532 wrote to memory of 1716	532	3557b40fe27beb221cbd1f1376a1fcf359775891ac3bf5d4d03ba45b7d16878b.exe	28
PID 532 wrote to memory of 1352	532	3557b40fe27beb221cbd1f1376a1fcf359775891ac3bf5d4d03ba45b7d16878b.exe	30
PID 532 wrote to memory of 1352	532	3557b40fe27beb221cbd1f1376a1fcf359775891ac3bf5d4d03ba45b7d16878b.exe	30
PID 532 wrote to memory of 1352	532	3557b40fe27beb221cbd1f1376a1fcf359775891ac3bf5d4d03ba45b7d16878b.exe	30
PID 532 wrote to memory of 1352	532	3557b40fe27beb221cbd1f1376a1fcf359775891ac3bf5d4d03ba45b7d16878b.exe	30
PID 532 wrote to memory of 1104	532	3557b40fe27beb221cbd1f1376a1fcf359775891ac3bf5d4d03ba45b7d16878b.exe	33
PID 532 wrote to memory of 1104	532	3557b40fe27beb221cbd1f1376a1fcf359775891ac3bf5d4d03ba45b7d16878b.exe	33
PID 532 wrote to memory of 1104	532	3557b40fe27beb221cbd1f1376a1fcf359775891ac3bf5d4d03ba45b7d16878b.exe	33
PID 532 wrote to memory of 1104	532	3557b40fe27beb221cbd1f1376a1fcf359775891ac3bf5d4d03ba45b7d16878b.exe	33
PID 964 wrote to memory of 1844	964	taskeng.exe	35
PID 964 wrote to memory of 1844	964	taskeng.exe	35
PID 964 wrote to memory of 1844	964	taskeng.exe	35
PID 964 wrote to memory of 1844	964	taskeng.exe	35

C:\Users\Admin\AppData\Local\Temp\3557b40fe27beb221cbd1f1376a1fcf359775891ac3bf5d4d03ba45b7d16878b.exe
"C:\Users\Admin\AppData\Local\Temp\3557b40fe27beb221cbd1f1376a1fcf359775891ac3bf5d4d03ba45b7d16878b.exe"
1⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:532
- C:\Windows\SysWOW64\schtasks.exe
  /C /create /F /sc minute /mo 5 /tn "Quick Assist{D4F4H6S2V5-J7A2D3F4-N5C3D5G4J7K7}" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\QuickAssist\quickassist.exe"
  2⤵
  - Creates scheduled task(s)
  PID:1716
- C:\Windows\SysWOW64\schtasks.exe
  /C /Query /XML /TN "Quick Assist{D4F4H6S2V5-J7A2D3F4-N5C3D5G4J7K7}"
  2⤵
  PID:1352
- C:\Windows\SysWOW64\schtasks.exe
  /C /create /F /tn "Quick Assist{D4F4H6S2V5-J7A2D3F4-N5C3D5G4J7K7}" /XML "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\QuickAssist\4367458697643422"
  2⤵
  - Creates scheduled task(s)
  PID:688
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 532 -s 192
  2⤵
  - Program crash
  PID:1104

C:\Windows\system32\taskeng.exe
taskeng.exe {A72849EC-9AB9-4F93-8D37-422ED2E7CA79} S-1-5-21-3406023954-474543476-3319432036-1000:VUIIVLGQ\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:964
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\QuickAssist\quickassist.exe
  C:\Users\Admin\AppData\Roaming\Microsoft\Windows\QuickAssist\quickassist.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious behavior: EnumeratesProcesses
  PID:1844

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\QuickAssist\quickassist.exe

Filesize
6.0MB

MD5
42979249e85a0ef1f6c0e4e7a2ab8b13

SHA1
65159abf134bc0578e6bee9efa67cef63fee6199

SHA256
3557b40fe27beb221cbd1f1376a1fcf359775891ac3bf5d4d03ba45b7d16878b

SHA512
50ed8037ef3904833a323ed169cb269ef622e4209b2ccd2c34ea8f848c9ab53bbf01e26cba7839288225e0204df58b4e073aa13cfab74feb8206f64d18772bcf

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\QuickAssist\quickassist.exe

Filesize
6.0MB

MD5
42979249e85a0ef1f6c0e4e7a2ab8b13

SHA1
65159abf134bc0578e6bee9efa67cef63fee6199

SHA256
3557b40fe27beb221cbd1f1376a1fcf359775891ac3bf5d4d03ba45b7d16878b

SHA512
50ed8037ef3904833a323ed169cb269ef622e4209b2ccd2c34ea8f848c9ab53bbf01e26cba7839288225e0204df58b4e073aa13cfab74feb8206f64d18772bcf

Download Submit
memory/532-54-0x0000000075FF1000-0x0000000075FF3000-memory.dmp

Filesize
8KB

Download
memory/532-55-0x0000000000400000-0x0000000000D69000-memory.dmp

Filesize
9.4MB

Download
memory/532-56-0x0000000000400000-0x0000000000D69000-memory.dmp

Filesize
9.4MB

Download
memory/1844-64-0x0000000000400000-0x0000000000D69000-memory.dmp

Filesize
9.4MB

Download
memory/1844-65-0x0000000000400000-0x0000000000D69000-memory.dmp

Filesize
9.4MB

Download
memory/1844-66-0x0000000000400000-0x0000000000D69000-memory.dmp

Filesize
9.4MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads