buer | 1e06ef556ce681f14ed8fe9cfd3ebba0dfd2ec97602cfa39b99bec9a7437ed1a

General

Target

1e06ef556ce681f14ed8fe9cfd3ebba0dfd2ec97602cfa39b99bec9a7437ed1a.exe
Size

558KB
MD5

b1b1b46182236ad1ca363773c4a601df
SHA1

4563f3a7790e988c825796dfa0f3e1ec4ddb2d70
SHA256

1e06ef556ce681f14ed8fe9cfd3ebba0dfd2ec97602cfa39b99bec9a7437ed1a
SHA512

2f3f04cdb4c32f26ff86b09cb350934036f317413b0a494e4059af6d659719e8a129264a8c47bbcdfd88eb77060fb1030cca9d5f52f4f05c62e12ebfab99ed9f

Score

10^/10

buer loader

Malware Config

Extracted

Family

buer

C2

https://bankcreditsign.com/

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/2344-130-0x0000000000790000-0x00000000007F0000-memory.dmp	buer
behavioral2/memory/2344-134-0x0000000040000000-0x000000004005D000-memory.dmp	buer
behavioral2/memory/2344-138-0x0000000000730000-0x000000000078E000-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)	\??\F:	1e06ef556ce681f14ed8fe9cfd3ebba0dfd2ec97602cfa39b99bec9a7437ed1a.exe
File opened (read-only)	\??\J:	1e06ef556ce681f14ed8fe9cfd3ebba0dfd2ec97602cfa39b99bec9a7437ed1a.exe
File opened (read-only)	\??\M:	1e06ef556ce681f14ed8fe9cfd3ebba0dfd2ec97602cfa39b99bec9a7437ed1a.exe
File opened (read-only)	\??\P:	1e06ef556ce681f14ed8fe9cfd3ebba0dfd2ec97602cfa39b99bec9a7437ed1a.exe
File opened (read-only)	\??\Q:	1e06ef556ce681f14ed8fe9cfd3ebba0dfd2ec97602cfa39b99bec9a7437ed1a.exe
File opened (read-only)	\??\Z:	1e06ef556ce681f14ed8fe9cfd3ebba0dfd2ec97602cfa39b99bec9a7437ed1a.exe
File opened (read-only)	\??\A:	1e06ef556ce681f14ed8fe9cfd3ebba0dfd2ec97602cfa39b99bec9a7437ed1a.exe
File opened (read-only)	\??\B:	1e06ef556ce681f14ed8fe9cfd3ebba0dfd2ec97602cfa39b99bec9a7437ed1a.exe
File opened (read-only)	\??\G:	1e06ef556ce681f14ed8fe9cfd3ebba0dfd2ec97602cfa39b99bec9a7437ed1a.exe
File opened (read-only)	\??\S:	1e06ef556ce681f14ed8fe9cfd3ebba0dfd2ec97602cfa39b99bec9a7437ed1a.exe
File opened (read-only)	\??\V:	1e06ef556ce681f14ed8fe9cfd3ebba0dfd2ec97602cfa39b99bec9a7437ed1a.exe
File opened (read-only)	\??\Y:	1e06ef556ce681f14ed8fe9cfd3ebba0dfd2ec97602cfa39b99bec9a7437ed1a.exe
File opened (read-only)	\??\E:	1e06ef556ce681f14ed8fe9cfd3ebba0dfd2ec97602cfa39b99bec9a7437ed1a.exe
File opened (read-only)	\??\H:	1e06ef556ce681f14ed8fe9cfd3ebba0dfd2ec97602cfa39b99bec9a7437ed1a.exe
File opened (read-only)	\??\I:	1e06ef556ce681f14ed8fe9cfd3ebba0dfd2ec97602cfa39b99bec9a7437ed1a.exe
File opened (read-only)	\??\L:	1e06ef556ce681f14ed8fe9cfd3ebba0dfd2ec97602cfa39b99bec9a7437ed1a.exe
File opened (read-only)	\??\O:	1e06ef556ce681f14ed8fe9cfd3ebba0dfd2ec97602cfa39b99bec9a7437ed1a.exe
File opened (read-only)	\??\U:	1e06ef556ce681f14ed8fe9cfd3ebba0dfd2ec97602cfa39b99bec9a7437ed1a.exe
File opened (read-only)	\??\X:	1e06ef556ce681f14ed8fe9cfd3ebba0dfd2ec97602cfa39b99bec9a7437ed1a.exe
File opened (read-only)	\??\K:	1e06ef556ce681f14ed8fe9cfd3ebba0dfd2ec97602cfa39b99bec9a7437ed1a.exe
File opened (read-only)	\??\N:	1e06ef556ce681f14ed8fe9cfd3ebba0dfd2ec97602cfa39b99bec9a7437ed1a.exe
File opened (read-only)	\??\R:	1e06ef556ce681f14ed8fe9cfd3ebba0dfd2ec97602cfa39b99bec9a7437ed1a.exe
File opened (read-only)	\??\T:	1e06ef556ce681f14ed8fe9cfd3ebba0dfd2ec97602cfa39b99bec9a7437ed1a.exe
File opened (read-only)	\??\W:	1e06ef556ce681f14ed8fe9cfd3ebba0dfd2ec97602cfa39b99bec9a7437ed1a.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1684	powershell.exe
1684	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1684	powershell.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2344 wrote to memory of 1684	2344	1e06ef556ce681f14ed8fe9cfd3ebba0dfd2ec97602cfa39b99bec9a7437ed1a.exe	85
PID 2344 wrote to memory of 1684	2344	1e06ef556ce681f14ed8fe9cfd3ebba0dfd2ec97602cfa39b99bec9a7437ed1a.exe	85
PID 2344 wrote to memory of 1684	2344	1e06ef556ce681f14ed8fe9cfd3ebba0dfd2ec97602cfa39b99bec9a7437ed1a.exe	85

C:\Users\Admin\AppData\Local\Temp\1e06ef556ce681f14ed8fe9cfd3ebba0dfd2ec97602cfa39b99bec9a7437ed1a.exe
"C:\Users\Admin\AppData\Local\Temp\1e06ef556ce681f14ed8fe9cfd3ebba0dfd2ec97602cfa39b99bec9a7437ed1a.exe"
1⤵
- Enumerates connected drives
- Suspicious use of WriteProcessMemory
PID:2344
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell.exe -Command "& {Add-MpPreference -ExclusionPath C:\ProgramData\089255fc2f67b63118ab}"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1684

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/1684-145-0x00000000066C0000-0x00000000066F2000-memory.dmp

Filesize
200KB

Download
memory/1684-152-0x0000000007610000-0x000000000761E000-memory.dmp

Filesize
56KB

Download
memory/1684-142-0x0000000005980000-0x00000000059E6000-memory.dmp

Filesize
408KB

Download
memory/1684-139-0x0000000004AB0000-0x0000000004AE6000-memory.dmp

Filesize
216KB

Download
memory/1684-140-0x00000000051A0000-0x00000000057C8000-memory.dmp

Filesize
6.2MB

Download
memory/1684-141-0x00000000050A0000-0x00000000050C2000-memory.dmp

Filesize
136KB

Download
memory/1684-153-0x0000000007720000-0x000000000773A000-memory.dmp

Filesize
104KB

Download
memory/1684-154-0x0000000007700000-0x0000000007708000-memory.dmp

Filesize
32KB

Download
memory/1684-144-0x0000000004DC0000-0x0000000004DDE000-memory.dmp

Filesize
120KB

Download
memory/1684-143-0x00000000059F0000-0x0000000005A56000-memory.dmp

Filesize
408KB

Download
memory/1684-146-0x00000000709F0000-0x0000000070A3C000-memory.dmp

Filesize
304KB

Download
memory/1684-147-0x0000000006680000-0x000000000669E000-memory.dmp

Filesize
120KB

Download
memory/1684-148-0x0000000007A50000-0x00000000080CA000-memory.dmp

Filesize
6.5MB

Download
memory/1684-149-0x00000000073F0000-0x000000000740A000-memory.dmp

Filesize
104KB

Download
memory/1684-150-0x0000000007450000-0x000000000745A000-memory.dmp

Filesize
40KB

Download
memory/1684-151-0x0000000007660000-0x00000000076F6000-memory.dmp

Filesize
600KB

Download
memory/2344-134-0x0000000040000000-0x000000004005D000-memory.dmp

Filesize
372KB

Download
memory/2344-130-0x0000000000790000-0x00000000007F0000-memory.dmp

Filesize
384KB

Download
memory/2344-138-0x0000000000730000-0x000000000078E000-memory.dmp

Filesize
376KB

Download

Analysis

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