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 4 IoCs

Detects Buer loader in memory or disk.

loader

Processes:

resource	yara_rule
behavioral2/memory/2072-17-0x0000000040000000-0x000000004000C000-memory.dmp	buer
behavioral2/memory/2072-19-0x0000000040000000-0x000000004000C000-memory.dmp	buer
behavioral2/memory/2072-20-0x0000000040000000-0x000000004000C000-memory.dmp	buer
behavioral2/memory/2072-23-0x0000000040000000-0x000000004000C000-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

Processes:

powershell.exe

pid process

4124 powershell.exe

pid	process
4124	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\Control Panel\International\Geo\Nation	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.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

Processes:

a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe

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

Suspicious use of SetThreadContext 1 IoCs

Processes:

a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe

description	pid	process	target process
PID 4480 set thread context of 2072	4480	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe

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

Processes:

schtasks.exe

pid process

4484 schtasks.exe

pid	process
4484	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exepowershell.exe

pid	process
4480	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe
4480	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe
4480	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe
4124	powershell.exe
4124	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exepowershell.exe

description pid process

Token: SeDebugPrivilege 4480 a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe
Token: SeDebugPrivilege 4124 powershell.exe

description	pid	process
Token: SeDebugPrivilege	4480	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe
Token: SeDebugPrivilege	4124	powershell.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exea81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe

C:\Users\Admin\AppData\Local\Temp\a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4480

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\KUCeBegeqW" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE639.tmp"
2⤵
- Creates scheduled task(s)
PID:4484

C:\Users\Admin\AppData\Local\Temp\a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe
"{path}"
2⤵
- Enumerates connected drives
- Suspicious use of WriteProcessMemory
PID:2072

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -Command "& {Add-MpPreference -ExclusionPath C:\ProgramData\10fdcfcde3dac8373faa}"
3⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4124

Network

MITRE ATT&CK Matrix ATT&CK v13

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

Query Registry

2

T1012

System Information Discovery

3

T1082

Peripheral Device Discovery

1

T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_uyrzp3pr.zia.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpE639.tmp
Filesize
1KB

MD5
44c355e457bc31917fc5f311eb6eb889

SHA1
7f2397063412514c142807cd4686e45491139074

SHA256
c00bc20c2014a763431c426856d8203cf6fa5e90787077a56082a74f5f60ba98

SHA512
6789798fb7815731baf1d3767a8b909e582e9f4f2bf63fa59feb138cb33fd0d16385221ac9fc7b8355e860aeb02796ba04c88d28f0a1f43638cba2d2bc018656

Download Submit
memory/2072-23-0x0000000040000000-0x000000004000C000-memory.dmp

Filesize
48KB

Download
memory/2072-20-0x0000000040000000-0x000000004000C000-memory.dmp

Filesize
48KB

Download
memory/2072-19-0x0000000040000000-0x000000004000C000-memory.dmp

Filesize
48KB

Download
memory/2072-17-0x0000000040000000-0x000000004000C000-memory.dmp

Filesize
48KB

Download
memory/4124-54-0x0000000007020000-0x000000000703E000-memory.dmp

Filesize
120KB

Download
memory/4124-55-0x0000000007050000-0x00000000070F3000-memory.dmp

Filesize
652KB

Download
memory/4124-67-0x00000000749A0000-0x0000000075150000-memory.dmp

Filesize
7.7MB

Download
memory/4124-64-0x00000000074A0000-0x00000000074A8000-memory.dmp

Filesize
32KB

Download
memory/4124-63-0x00000000074C0000-0x00000000074DA000-memory.dmp

Filesize
104KB

Download
memory/4124-62-0x00000000073C0000-0x00000000073D4000-memory.dmp

Filesize
80KB

Download
memory/4124-61-0x00000000073B0000-0x00000000073BE000-memory.dmp

Filesize
56KB

Download
memory/4124-60-0x0000000007380000-0x0000000007391000-memory.dmp

Filesize
68KB

Download
memory/4124-59-0x0000000007400000-0x0000000007496000-memory.dmp

Filesize
600KB

Download
memory/4124-58-0x0000000007200000-0x000000000720A000-memory.dmp

Filesize
40KB

Download
memory/4124-57-0x0000000007180000-0x000000000719A000-memory.dmp

Filesize
104KB

Download
memory/4124-56-0x00000000077D0000-0x0000000007E4A000-memory.dmp

Filesize
6.5MB

Download
memory/4124-44-0x00000000707C0000-0x000000007080C000-memory.dmp

Filesize
304KB

Download
memory/4124-43-0x0000000006430000-0x0000000006462000-memory.dmp

Filesize
200KB

Download
memory/4124-24-0x00000000749AE000-0x00000000749AF000-memory.dmp

Filesize
4KB

Download
memory/4124-25-0x00000000028A0000-0x00000000028D6000-memory.dmp

Filesize
216KB

Download
memory/4124-26-0x00000000749A0000-0x0000000075150000-memory.dmp

Filesize
7.7MB

Download
memory/4124-27-0x0000000005000000-0x0000000005628000-memory.dmp

Filesize
6.2MB

Download
memory/4124-28-0x00000000749A0000-0x0000000075150000-memory.dmp

Filesize
7.7MB

Download
memory/4124-29-0x0000000004E90000-0x0000000004EB2000-memory.dmp

Filesize
136KB

Download
memory/4124-30-0x0000000005710000-0x0000000005776000-memory.dmp

Filesize
408KB

Download
memory/4124-42-0x0000000005EF0000-0x0000000005F3C000-memory.dmp

Filesize
304KB

Download
memory/4124-40-0x0000000005880000-0x0000000005BD4000-memory.dmp

Filesize
3.3MB

Download
memory/4124-41-0x0000000005E60000-0x0000000005E7E000-memory.dmp

Filesize
120KB

Download
memory/4480-4-0x00000000052B0000-0x00000000052BA000-memory.dmp

Filesize
40KB

Download
memory/4480-6-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/4480-22-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/4480-0-0x000000007492E000-0x000000007492F000-memory.dmp

Filesize
4KB

Download
memory/4480-7-0x0000000005530000-0x000000000553A000-memory.dmp

Filesize
40KB

Download
memory/4480-3-0x00000000051D0000-0x0000000005262000-memory.dmp

Filesize
584KB

Download
memory/4480-2-0x0000000005780000-0x0000000005D24000-memory.dmp

Filesize
5.6MB

Download
memory/4480-5-0x0000000005330000-0x0000000005396000-memory.dmp

Filesize
408KB

Download
memory/4480-1-0x00000000006F0000-0x0000000000756000-memory.dmp

Filesize
408KB

Download
memory/4480-13-0x0000000006600000-0x000000000663A000-memory.dmp

Filesize
232KB

Download
memory/4480-12-0x0000000006FF0000-0x000000000708C000-memory.dmp

Filesize
624KB

Download
memory/4480-11-0x0000000006EF0000-0x0000000006F50000-memory.dmp

Filesize
384KB

Download
memory/4480-10-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/4480-9-0x000000007492E000-0x000000007492F000-memory.dmp

Filesize
4KB

Download
memory/4480-8-0x0000000006B10000-0x0000000006E64000-memory.dmp

Filesize
3.3MB

Download

description	pid	process	target process
PID 4480 wrote to memory of 4484	4480	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe	schtasks.exe
PID 4480 wrote to memory of 4484	4480	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe	schtasks.exe
PID 4480 wrote to memory of 4484	4480	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe	schtasks.exe
PID 4480 wrote to memory of 2072	4480	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe
PID 4480 wrote to memory of 2072	4480	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe
PID 4480 wrote to memory of 2072	4480	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe
PID 4480 wrote to memory of 2072	4480	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe
PID 4480 wrote to memory of 2072	4480	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe
PID 4480 wrote to memory of 2072	4480	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe
PID 4480 wrote to memory of 2072	4480	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe
PID 4480 wrote to memory of 2072	4480	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe
PID 4480 wrote to memory of 2072	4480	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe
PID 2072 wrote to memory of 4124	2072	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe	powershell.exe
PID 2072 wrote to memory of 4124	2072	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe	powershell.exe
PID 2072 wrote to memory of 4124	2072	a81d104e7bb627a4d3a0f0b823e17581_JaffaCakes118.exe	powershell.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

Loading Replay Monitor...

Downloads