buer | 1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5

Analysis

max time kernel
114s
max time network
129s
platform
windows10-2004_x64
resource
win10v2004-20220310-en
submitted
14-04-2022 14:11

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General

Target

1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
Size

858KB
MD5

c2b6fbbc4fcda94fe3eb98afb72f8263
SHA1

040ec98f152d0debfaa703cc1e055108da415fbc
SHA256

1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5
SHA512

f539dc223290b2112c68511624ca59d9d60d3984796fe090f41f1149202fa74c9dd135725eefede18b35442215692109a039e6e7a078d1278f99a075e170deb0

Score

10^/10

buer loader

Malware Config

Extracted

Family

buer

https://gpsdrlow.net/

Signatures

Buer
Buer is a new modular loader first seen in August 2019.
loader buer

Buer Loader 3 IoCs

Detects Buer loader in memory or disk.

loader

resource	yara_rule
behavioral2/memory/692-136-0x0000000040000000-0x000000004000C000-memory.dmp	buer
behavioral2/memory/692-137-0x0000000040000000-0x000000004000C000-memory.dmp	buer
behavioral2/memory/692-140-0x0000000040000000-0x000000004000C000-memory.dmp	buer

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\webmail.exe	DllHost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\webmail.exe	DllHost.exe

Enumerates connected drives 3 TTPs 24 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)	\??\R:	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
File opened (read-only)	\??\U:	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
File opened (read-only)	\??\X:	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
File opened (read-only)	\??\A:	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
File opened (read-only)	\??\B:	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
File opened (read-only)	\??\E:	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
File opened (read-only)	\??\H:	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
File opened (read-only)	\??\L:	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
File opened (read-only)	\??\M:	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
File opened (read-only)	\??\V:	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
File opened (read-only)	\??\Z:	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
File opened (read-only)	\??\G:	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
File opened (read-only)	\??\I:	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
File opened (read-only)	\??\O:	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
File opened (read-only)	\??\N:	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
File opened (read-only)	\??\P:	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
File opened (read-only)	\??\Q:	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
File opened (read-only)	\??\S:	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
File opened (read-only)	\??\T:	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
File opened (read-only)	\??\F:	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
File opened (read-only)	\??\J:	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
File opened (read-only)	\??\K:	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
File opened (read-only)	\??\W:	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
File opened (read-only)	\??\Y:	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe

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 44 IoCs

pid	Process
4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
3088	powershell.exe
3088	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3088	powershell.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4808 wrote to memory of 692	4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe	90
PID 4808 wrote to memory of 692	4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe	90
PID 4808 wrote to memory of 692	4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe	90
PID 4808 wrote to memory of 692	4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe	90
PID 4808 wrote to memory of 692	4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe	90
PID 4808 wrote to memory of 692	4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe	90
PID 4808 wrote to memory of 692	4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe	90
PID 4808 wrote to memory of 692	4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe	90
PID 4808 wrote to memory of 692	4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe	90
PID 4808 wrote to memory of 692	4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe	90
PID 4808 wrote to memory of 692	4808	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe	90
PID 692 wrote to memory of 3088	692	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe	91
PID 692 wrote to memory of 3088	692	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe	91
PID 692 wrote to memory of 3088	692	1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe	91

C:\Users\Admin\AppData\Local\Temp\1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
"C:\Users\Admin\AppData\Local\Temp\1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4808
- C:\Users\Admin\AppData\Local\Temp\1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe
  "C:\Users\Admin\AppData\Local\Temp\1884d4a7e597fe560258585106a474c464659864a51ccd6ecd0e245409594dc5.exe"
  2⤵
  - Enumerates connected drives
  - Suspicious use of WriteProcessMemory
  PID:692
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    powershell.exe -Command "& {Add-MpPreference -ExclusionPath C:\ProgramData\b6877494d4431a84069b}"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3088

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{3AD05575-8857-4850-9277-11B85BDB8E09}
1⤵
- Drops startup file
PID:3916

Network

MITRE ATT&CK Enterprise v6

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/692-137-0x0000000040000000-0x000000004000C000-memory.dmp

Filesize
48KB

Download
memory/692-136-0x0000000040000000-0x000000004000C000-memory.dmp

Filesize
48KB

Download
memory/692-140-0x0000000040000000-0x000000004000C000-memory.dmp

Filesize
48KB

Download
memory/3088-146-0x0000000005E90000-0x0000000005EAE000-memory.dmp

Filesize
120KB

Download
memory/3088-147-0x00000000027E5000-0x00000000027E7000-memory.dmp

Filesize
8KB

Download
memory/3088-157-0x00000000074C0000-0x00000000074C8000-memory.dmp

Filesize
32KB

Download
memory/3088-141-0x0000000004860000-0x0000000004896000-memory.dmp

Filesize
216KB

Download
memory/3088-142-0x0000000004ED0000-0x00000000054F8000-memory.dmp

Filesize
6.2MB

Download
memory/3088-143-0x0000000004B70000-0x0000000004B92000-memory.dmp

Filesize
136KB

Download
memory/3088-144-0x0000000005730000-0x0000000005796000-memory.dmp

Filesize
408KB

Download
memory/3088-145-0x00000000057D0000-0x0000000005836000-memory.dmp

Filesize
408KB

Download
memory/3088-156-0x00000000074E0000-0x00000000074FA000-memory.dmp

Filesize
104KB

Download
memory/3088-148-0x00000000063E0000-0x0000000006412000-memory.dmp

Filesize
200KB

Download
memory/3088-149-0x00000000709D0000-0x0000000070A1C000-memory.dmp

Filesize
304KB

Download
memory/3088-150-0x00000000063C0000-0x00000000063DE000-memory.dmp

Filesize
120KB

Download
memory/3088-151-0x00000000077E0000-0x0000000007E5A000-memory.dmp

Filesize
6.5MB

Download
memory/3088-152-0x00000000071A0000-0x00000000071BA000-memory.dmp

Filesize
104KB

Download
memory/3088-153-0x0000000007210000-0x000000000721A000-memory.dmp

Filesize
40KB

Download
memory/3088-154-0x0000000007400000-0x0000000007496000-memory.dmp

Filesize
600KB

Download
memory/3088-155-0x00000000073D0000-0x00000000073DE000-memory.dmp

Filesize
56KB

Download
memory/4808-134-0x0000000002390000-0x000000000240B000-memory.dmp

Filesize
492KB

Download
memory/4808-138-0x0000000002530000-0x00000000026D3000-memory.dmp

Filesize
1.6MB

Download