buer | 67c08d2a21a3ade47ed790aa65ef7cbb117e32300b432f5be97d5ff13c745247

General

Target

67c08d2a21a3ade47ed790aa65ef7cbb117e32300b432f5be97d5ff13c745247.exe
Size

239KB
MD5

f447d7a2f7cfb24db6b3c42716b16457
SHA1

6c898d8bc1b2311859b34df36e0ba9c392a30b9f
SHA256

67c08d2a21a3ade47ed790aa65ef7cbb117e32300b432f5be97d5ff13c745247
SHA512

b303f0d106ce5fadda89346e78516ca8251dd532f1efa2540085b665d9de6dbba03c77bdc7007294a893f62a5e1fe22790513b97261eb6ba4eed1aac4d870e1a

Score

10^/10

buer loader

Malware Config

Extracted

Family

buer

C2

https://104.248.83.13/

Signatures

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

Buer Loader 2 IoCs

Detects Buer loader in memory or disk.

resource	yara_rule
behavioral2/memory/728-0-0x0000000000650000-0x000000000065F000-memory.dmp	buer
behavioral2/memory/728-1-0x0000000040000000-0x000000004000C000-memory.dmp	buer

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)	\??\P:	67c08d2a21a3ade47ed790aa65ef7cbb117e32300b432f5be97d5ff13c745247.exe
File opened (read-only)	\??\S:	67c08d2a21a3ade47ed790aa65ef7cbb117e32300b432f5be97d5ff13c745247.exe
File opened (read-only)	\??\U:	67c08d2a21a3ade47ed790aa65ef7cbb117e32300b432f5be97d5ff13c745247.exe
File opened (read-only)	\??\V:	67c08d2a21a3ade47ed790aa65ef7cbb117e32300b432f5be97d5ff13c745247.exe
File opened (read-only)	\??\A:	67c08d2a21a3ade47ed790aa65ef7cbb117e32300b432f5be97d5ff13c745247.exe
File opened (read-only)	\??\B:	67c08d2a21a3ade47ed790aa65ef7cbb117e32300b432f5be97d5ff13c745247.exe
File opened (read-only)	\??\M:	67c08d2a21a3ade47ed790aa65ef7cbb117e32300b432f5be97d5ff13c745247.exe
File opened (read-only)	\??\N:	67c08d2a21a3ade47ed790aa65ef7cbb117e32300b432f5be97d5ff13c745247.exe
File opened (read-only)	\??\X:	67c08d2a21a3ade47ed790aa65ef7cbb117e32300b432f5be97d5ff13c745247.exe
File opened (read-only)	\??\Y:	67c08d2a21a3ade47ed790aa65ef7cbb117e32300b432f5be97d5ff13c745247.exe
File opened (read-only)	\??\O:	67c08d2a21a3ade47ed790aa65ef7cbb117e32300b432f5be97d5ff13c745247.exe
File opened (read-only)	\??\Q:	67c08d2a21a3ade47ed790aa65ef7cbb117e32300b432f5be97d5ff13c745247.exe
File opened (read-only)	\??\T:	67c08d2a21a3ade47ed790aa65ef7cbb117e32300b432f5be97d5ff13c745247.exe
File opened (read-only)	\??\W:	67c08d2a21a3ade47ed790aa65ef7cbb117e32300b432f5be97d5ff13c745247.exe
File opened (read-only)	\??\G:	67c08d2a21a3ade47ed790aa65ef7cbb117e32300b432f5be97d5ff13c745247.exe
File opened (read-only)	\??\I:	67c08d2a21a3ade47ed790aa65ef7cbb117e32300b432f5be97d5ff13c745247.exe
File opened (read-only)	\??\K:	67c08d2a21a3ade47ed790aa65ef7cbb117e32300b432f5be97d5ff13c745247.exe
File opened (read-only)	\??\L:	67c08d2a21a3ade47ed790aa65ef7cbb117e32300b432f5be97d5ff13c745247.exe
File opened (read-only)	\??\R:	67c08d2a21a3ade47ed790aa65ef7cbb117e32300b432f5be97d5ff13c745247.exe
File opened (read-only)	\??\Z:	67c08d2a21a3ade47ed790aa65ef7cbb117e32300b432f5be97d5ff13c745247.exe
File opened (read-only)	\??\E:	67c08d2a21a3ade47ed790aa65ef7cbb117e32300b432f5be97d5ff13c745247.exe
File opened (read-only)	\??\F:	67c08d2a21a3ade47ed790aa65ef7cbb117e32300b432f5be97d5ff13c745247.exe
File opened (read-only)	\??\H:	67c08d2a21a3ade47ed790aa65ef7cbb117e32300b432f5be97d5ff13c745247.exe
File opened (read-only)	\??\J:	67c08d2a21a3ade47ed790aa65ef7cbb117e32300b432f5be97d5ff13c745247.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1792	powershell.exe
1792	powershell.exe
1792	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1792	powershell.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 728 wrote to memory of 1792	728	67c08d2a21a3ade47ed790aa65ef7cbb117e32300b432f5be97d5ff13c745247.exe	76
PID 728 wrote to memory of 1792	728	67c08d2a21a3ade47ed790aa65ef7cbb117e32300b432f5be97d5ff13c745247.exe	76
PID 728 wrote to memory of 1792	728	67c08d2a21a3ade47ed790aa65ef7cbb117e32300b432f5be97d5ff13c745247.exe	76

C:\Users\Admin\AppData\Local\Temp\67c08d2a21a3ade47ed790aa65ef7cbb117e32300b432f5be97d5ff13c745247.exe
"C:\Users\Admin\AppData\Local\Temp\67c08d2a21a3ade47ed790aa65ef7cbb117e32300b432f5be97d5ff13c745247.exe"
1⤵
- Enumerates connected drives
- Suspicious use of WriteProcessMemory
PID:728
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell.exe -Command "& {Add-MpPreference -ExclusionPath C:\ProgramData\13367dad19b34959fa2d}"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1792

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/728-0-0x0000000000650000-0x000000000065F000-memory.dmp

Filesize
60KB

Download
memory/728-1-0x0000000040000000-0x000000004000C000-memory.dmp

Filesize
48KB

Download
memory/1792-3-0x0000000073310000-0x00000000739FE000-memory.dmp

Filesize
6.9MB

Download
memory/1792-4-0x0000000005090000-0x0000000005091000-memory.dmp

Filesize
4KB

Download
memory/1792-5-0x0000000007850000-0x0000000007851000-memory.dmp

Filesize
4KB

Download
memory/1792-6-0x0000000007E80000-0x0000000007E81000-memory.dmp

Filesize
4KB

Download
memory/1792-7-0x0000000007F20000-0x0000000007F21000-memory.dmp

Filesize
4KB

Download
memory/1792-8-0x0000000008170000-0x0000000008171000-memory.dmp

Filesize
4KB

Download
memory/1792-9-0x00000000081E0000-0x00000000081E1000-memory.dmp

Filesize
4KB

Download
memory/1792-10-0x0000000008050000-0x0000000008051000-memory.dmp

Filesize
4KB

Download
memory/1792-11-0x00000000089E0000-0x00000000089E1000-memory.dmp

Filesize
4KB

Download
memory/1792-12-0x0000000008860000-0x0000000008861000-memory.dmp

Filesize
4KB

Download
memory/1792-14-0x00000000096C0000-0x00000000096F3000-memory.dmp

Filesize
204KB

Download
memory/1792-21-0x00000000096A0000-0x00000000096A1000-memory.dmp

Filesize
4KB

Download
memory/1792-22-0x0000000009800000-0x0000000009801000-memory.dmp

Filesize
4KB

Download
memory/1792-23-0x0000000009BD0000-0x0000000009BD1000-memory.dmp

Filesize
4KB

Download
memory/1792-24-0x0000000009B70000-0x0000000009B71000-memory.dmp

Filesize
4KB

Download
memory/1792-26-0x0000000009B60000-0x0000000009B61000-memory.dmp

Filesize
4KB

Download

Analysis

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