buer | 17147bfbf7936c807449340f3cbcaf49f16e905d8f768b16f8c2e628bf49a894

General

Target

a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe
Size

384KB
MD5

a81d104e7bb627a4d3a0f0b823e17581
SHA1

ddc6f577463ff140e525cf7f4a4f083406acd1f4
SHA256

17147bfbf7936c807449340f3cbcaf49f16e905d8f768b16f8c2e628bf49a894
SHA512

18bc43f92dd794655a26529634f3683d183c2b130b4ced99a276f389c0e3f3c6f03763c5681ec4c80744dda0699d63919d25333f56295729733a2b09b5283b32
SSDEEP

6144:ad+I/yqyVBiwIbAVWxWGHGJEFMi9B3FPVNM+zZDGJBq6TIKVxUg4MlEs2dfYp:0yqyRIEVwWGHGJEii9B3p8+zBGJBpDVS

Score

10^/10

buer execution loader

Malware Config

Extracted

Family

buer

C2

https://kackdelar.top/

Signatures

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

Buer Loader 7 IoCs

Detects Buer loader in memory or disk.

loader

resource	yara_rule
behavioral1/memory/2236-18-0x0000000040000000-0x000000004000C000-memory.dmp	buer
behavioral1/memory/2236-15-0x0000000040000000-0x000000004000C000-memory.dmp	buer
behavioral1/memory/2236-14-0x0000000040000000-0x000000004000C000-memory.dmp	buer
behavioral1/memory/2236-13-0x0000000040000000-0x000000004000C000-memory.dmp	buer
behavioral1/memory/2236-22-0x0000000040000000-0x000000004000C000-memory.dmp	buer
behavioral1/memory/2236-20-0x0000000040000000-0x000000004000C000-memory.dmp	buer
behavioral1/memory/2236-25-0x0000000040000000-0x000000004000C000-memory.dmp	buer

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2800	powershell.exe

Enumerates connected drives 3 TTPs 23 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)	\??\E:	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe
File opened (read-only)	\??\M:	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe
File opened (read-only)	\??\N:	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe
File opened (read-only)	\??\O:	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe
File opened (read-only)	\??\S:	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe
File opened (read-only)	\??\T:	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe
File opened (read-only)	\??\U:	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe
File opened (read-only)	\??\Y:	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe
File opened (read-only)	\??\J:	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe
File opened (read-only)	\??\K:	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe
File opened (read-only)	\??\Q:	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe
File opened (read-only)	\??\W:	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe
File opened (read-only)	\??\Z:	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe
File opened (read-only)	\??\A:	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe
File opened (read-only)	\??\B:	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe
File opened (read-only)	\??\G:	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe
File opened (read-only)	\??\H:	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe
File opened (read-only)	\??\I:	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe
File opened (read-only)	\??\L:	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe
File opened (read-only)	\??\P:	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe
File opened (read-only)	\??\R:	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe
File opened (read-only)	\??\V:	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe
File opened (read-only)	\??\X:	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2908 set thread context of 2236	2908	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe	30

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

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

persistence

Scheduled Task/Job

T1053

pid	Process
2852	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2908	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe
2908	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe
2800	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2908	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe
Token: SeDebugPrivilege	2800	powershell.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2908 wrote to memory of 2852	2908	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe	28
PID 2908 wrote to memory of 2852	2908	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe	28
PID 2908 wrote to memory of 2852	2908	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe	28
PID 2908 wrote to memory of 2852	2908	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe	28
PID 2908 wrote to memory of 2236	2908	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe	30
PID 2908 wrote to memory of 2236	2908	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe	30
PID 2908 wrote to memory of 2236	2908	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe	30
PID 2908 wrote to memory of 2236	2908	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe	30
PID 2908 wrote to memory of 2236	2908	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe	30
PID 2908 wrote to memory of 2236	2908	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe	30
PID 2908 wrote to memory of 2236	2908	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe	30
PID 2908 wrote to memory of 2236	2908	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe	30
PID 2908 wrote to memory of 2236	2908	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe	30
PID 2908 wrote to memory of 2236	2908	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe	30
PID 2236 wrote to memory of 2800	2236	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe	33
PID 2236 wrote to memory of 2800	2236	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe	33
PID 2236 wrote to memory of 2800	2236	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe	33
PID 2236 wrote to memory of 2800	2236	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe	33

C:\Users\Admin\AppData\Local\Temp\a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2908
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\KUCeBegeqW" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB1B3.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:2852
- C:\Users\Admin\AppData\Local\Temp\a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe
  "{path}"
  2⤵
  - Enumerates connected drives
  - Suspicious use of WriteProcessMemory
  PID:2236
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    powershell.exe -Command "& {Add-MpPreference -ExclusionPath C:\ProgramData\1b7516bff10a21d41be5}"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2800

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

Scheduled Task/Job

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpB1B3.tmp

Filesize
1KB

MD5
120b62b31537ff427f780bd5cde4077b

SHA1
b5e1b4b59b2a7c8faad1217e7209e3cf34131e68

SHA256
61ad803ac9821d8816c523a831a55b0a1428b80c1d79ed86a5cd616310664a60

SHA512
fe314ddfe94625ff242969492fa07135e488b8a0f9a02582dd2b4eaf44e65796b8ebe12f970e58f448f9102884f460f5ffd3fb20622fac0e43c1aa21e85116c8

Download Submit
memory/2236-11-0x0000000040000000-0x000000004000C000-memory.dmp

Filesize
48KB

Download
memory/2236-13-0x0000000040000000-0x000000004000C000-memory.dmp

Filesize
48KB

Download
memory/2236-12-0x0000000040000000-0x000000004000C000-memory.dmp

Filesize
48KB

Download
memory/2236-18-0x0000000040000000-0x000000004000C000-memory.dmp

Filesize
48KB

Download
memory/2236-20-0x0000000040000000-0x000000004000C000-memory.dmp

Filesize
48KB

Download
memory/2236-22-0x0000000040000000-0x000000004000C000-memory.dmp

Filesize
48KB

Download
memory/2236-14-0x0000000040000000-0x000000004000C000-memory.dmp

Filesize
48KB

Download
memory/2236-16-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2236-15-0x0000000040000000-0x000000004000C000-memory.dmp

Filesize
48KB

Download
memory/2236-25-0x0000000040000000-0x000000004000C000-memory.dmp

Filesize
48KB

Download
memory/2908-3-0x0000000000480000-0x000000000048A000-memory.dmp

Filesize
40KB

Download
memory/2908-1-0x0000000000990000-0x00000000009F6000-memory.dmp

Filesize
408KB

Download
memory/2908-7-0x0000000001F70000-0x0000000001FAA000-memory.dmp

Filesize
232KB

Download
memory/2908-2-0x0000000074200000-0x00000000748EE000-memory.dmp

Filesize
6.9MB

Download
memory/2908-0-0x000000007420E000-0x000000007420F000-memory.dmp

Filesize
4KB

Download
memory/2908-21-0x0000000074200000-0x00000000748EE000-memory.dmp

Filesize
6.9MB

Download
memory/2908-6-0x0000000004E80000-0x0000000004EE0000-memory.dmp

Filesize
384KB

Download
memory/2908-5-0x0000000074200000-0x00000000748EE000-memory.dmp

Filesize
6.9MB

Download
memory/2908-4-0x000000007420E000-0x000000007420F000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads