buer | dee6a220c1a2a3a53361c929e903744b78a751b93c38405e629aae4c16d1e597

Analysis

max time kernel
108s
max time network
117s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
01-05-2024 01:43

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

0ada5f2eec1893ee695758b75ebe351b_JaffaCakes118.exe
Size

356KB
MD5

0ada5f2eec1893ee695758b75ebe351b
SHA1

554bc863b128b83ca14f20e6b08028d8a12795a0
SHA256

dee6a220c1a2a3a53361c929e903744b78a751b93c38405e629aae4c16d1e597
SHA512

0aed5d83d07d651f62527aff20438090f143f86b98d053ad2af7a14b7166980078e8383910a4e38fabb8fa0bb60fcc23e56dbc7a5750be0b5827c1fa2bed780b
SSDEEP

6144:kyNp69yZH/0EkNrlXLp+Pe+zXLry08lY5W99A3ywES2:pNvcEkNFL4PeP5lYUU31ES2

Score

10^/10

buer loader

Malware Config

Extracted

Family

buer

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/1612-7-0x0000000040000000-0x000000004000C000-memory.dmp	buer
behavioral2/memory/1612-11-0x0000000040000000-0x000000004000C000-memory.dmp	buer
behavioral2/memory/1612-13-0x0000000040000000-0x000000004000C000-memory.dmp	buer
behavioral2/memory/1612-14-0x0000000040000000-0x000000004000C000-memory.dmp	buer

Drops startup file 1 IoCs

Processes:

0ada5f2eec1893ee695758b75ebe351b_JaffaCakes118.exe

description ioc process

File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\HJdyTuap.exe 0ada5f2eec1893ee695758b75ebe351b_JaffaCakes118.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\HJdyTuap.exe	0ada5f2eec1893ee695758b75ebe351b_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:

RegAsm.exe

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

Suspicious use of SetThreadContext 1 IoCs

Processes:

0ada5f2eec1893ee695758b75ebe351b_JaffaCakes118.exe

description pid process target process

PID 2420 set thread context of 1612 2420 0ada5f2eec1893ee695758b75ebe351b_JaffaCakes118.exe RegAsm.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

powershell.exe

pid process

4648 powershell.exe
4648 powershell.exe
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

0ada5f2eec1893ee695758b75ebe351b_JaffaCakes118.exe

pid process

2420 0ada5f2eec1893ee695758b75ebe351b_JaffaCakes118.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 4648 powershell.exe

description	pid	process	target process
PID 2420 set thread context of 1612	2420	0ada5f2eec1893ee695758b75ebe351b_JaffaCakes118.exe	RegAsm.exe

pid	process
4648	powershell.exe
4648	powershell.exe

pid	process
2420	0ada5f2eec1893ee695758b75ebe351b_JaffaCakes118.exe

description	pid	process
Token: SeDebugPrivilege	4648	powershell.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

0ada5f2eec1893ee695758b75ebe351b_JaffaCakes118.exeRegAsm.exe

description	pid	process	target process
PID 2420 wrote to memory of 1612	2420	0ada5f2eec1893ee695758b75ebe351b_JaffaCakes118.exe	RegAsm.exe
PID 2420 wrote to memory of 1612	2420	0ada5f2eec1893ee695758b75ebe351b_JaffaCakes118.exe	RegAsm.exe
PID 2420 wrote to memory of 1612	2420	0ada5f2eec1893ee695758b75ebe351b_JaffaCakes118.exe	RegAsm.exe
PID 2420 wrote to memory of 1612	2420	0ada5f2eec1893ee695758b75ebe351b_JaffaCakes118.exe	RegAsm.exe
PID 1612 wrote to memory of 4648	1612	RegAsm.exe	powershell.exe
PID 1612 wrote to memory of 4648	1612	RegAsm.exe	powershell.exe
PID 1612 wrote to memory of 4648	1612	RegAsm.exe	powershell.exe

C:\Users\Admin\AppData\Local\Temp\0ada5f2eec1893ee695758b75ebe351b_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\0ada5f2eec1893ee695758b75ebe351b_JaffaCakes118.exe"
1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2420

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
2⤵
- Enumerates connected drives
- Suspicious use of WriteProcessMemory
PID:1612

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -Command "& {Add-MpPreference -ExclusionPath C:\ProgramData\ea9dbb3507f258b401e8}"
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4648

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_vsezw5oq.oss.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1612-13-0x0000000040000000-0x000000004000C000-memory.dmp

Filesize
48KB

Download
memory/1612-7-0x0000000040000000-0x000000004000C000-memory.dmp

Filesize
48KB

Download
memory/1612-11-0x0000000040000000-0x000000004000C000-memory.dmp

Filesize
48KB

Download
memory/1612-14-0x0000000040000000-0x000000004000C000-memory.dmp

Filesize
48KB

Download
memory/2420-8-0x0000000006200000-0x0000000006203000-memory.dmp

Filesize
12KB

Download
memory/2420-3-0x0000000005610000-0x0000000005620000-memory.dmp

Filesize
64KB

Download
memory/2420-4-0x0000000005830000-0x0000000005846000-memory.dmp

Filesize
88KB

Download
memory/2420-6-0x0000000006110000-0x0000000006113000-memory.dmp

Filesize
12KB

Download
memory/2420-2-0x00000000743E0000-0x0000000074B90000-memory.dmp

Filesize
7.7MB

Download
memory/2420-12-0x00000000743E0000-0x0000000074B90000-memory.dmp

Filesize
7.7MB

Download
memory/2420-0-0x0000000000CE0000-0x0000000000D3E000-memory.dmp

Filesize
376KB

Download
memory/2420-1-0x0000000005690000-0x0000000005722000-memory.dmp

Filesize
584KB

Download
memory/4648-55-0x0000000007A70000-0x0000000007A81000-memory.dmp

Filesize
68KB

Download
memory/4648-37-0x000000006FDB0000-0x000000006FDFC000-memory.dmp

Filesize
304KB

Download
memory/4648-16-0x00000000743A0000-0x0000000074B50000-memory.dmp

Filesize
7.7MB

Download
memory/4648-19-0x00000000057A0000-0x0000000005DC8000-memory.dmp

Filesize
6.2MB

Download
memory/4648-20-0x0000000005680000-0x00000000056A2000-memory.dmp

Filesize
136KB

Download
memory/4648-32-0x0000000005F60000-0x00000000062B4000-memory.dmp

Filesize
3.3MB

Download
memory/4648-18-0x0000000003070000-0x0000000003080000-memory.dmp

Filesize
64KB

Download
memory/4648-15-0x0000000002F70000-0x0000000002FA6000-memory.dmp

Filesize
216KB

Download
memory/4648-21-0x0000000005DD0000-0x0000000005E36000-memory.dmp

Filesize
408KB

Download
memory/4648-33-0x0000000006550000-0x000000000656E000-memory.dmp

Filesize
120KB

Download
memory/4648-34-0x0000000006570000-0x00000000065BC000-memory.dmp

Filesize
304KB

Download
memory/4648-35-0x000000007F210000-0x000000007F220000-memory.dmp

Filesize
64KB

Download
memory/4648-36-0x0000000006B00000-0x0000000006B32000-memory.dmp

Filesize
200KB

Download
memory/4648-17-0x0000000003070000-0x0000000003080000-memory.dmp

Filesize
64KB

Download
memory/4648-49-0x0000000003070000-0x0000000003080000-memory.dmp

Filesize
64KB

Download
memory/4648-48-0x0000000003070000-0x0000000003080000-memory.dmp

Filesize
64KB

Download
memory/4648-47-0x0000000007710000-0x000000000772E000-memory.dmp

Filesize
120KB

Download
memory/4648-50-0x0000000007730000-0x00000000077D3000-memory.dmp

Filesize
652KB

Download
memory/4648-51-0x0000000007EB0000-0x000000000852A000-memory.dmp

Filesize
6.5MB

Download
memory/4648-52-0x0000000007870000-0x000000000788A000-memory.dmp

Filesize
104KB

Download
memory/4648-53-0x00000000078E0000-0x00000000078EA000-memory.dmp

Filesize
40KB

Download
memory/4648-54-0x0000000007AF0000-0x0000000007B86000-memory.dmp

Filesize
600KB

Download
memory/4648-22-0x0000000005EF0000-0x0000000005F56000-memory.dmp

Filesize
408KB

Download
memory/4648-56-0x0000000007AA0000-0x0000000007AAE000-memory.dmp

Filesize
56KB

Download
memory/4648-57-0x0000000007AB0000-0x0000000007AC4000-memory.dmp

Filesize
80KB

Download
memory/4648-58-0x0000000007BB0000-0x0000000007BCA000-memory.dmp

Filesize
104KB

Download
memory/4648-59-0x0000000007B90000-0x0000000007B98000-memory.dmp

Filesize
32KB

Download
memory/4648-62-0x00000000743A0000-0x0000000074B50000-memory.dmp

Filesize
7.7MB

Download