7142feb70d6d709c2c6e1ad58a1c69f5348e30d3e5b7154847a7fa4fcc4aab61

General

Target

2024-11-21_46e0d77fd57690bbab3c8ded7015a79a_bkransomware.exe
Size

1.4MB
MD5

46e0d77fd57690bbab3c8ded7015a79a
SHA1

d4b8df6b54c0eb7fdb344d75766a1a71ee74796b
SHA256

7142feb70d6d709c2c6e1ad58a1c69f5348e30d3e5b7154847a7fa4fcc4aab61
SHA512

ba0b8607617bfca14641ae5781a6cd161d31f83989a42b903f63db886a341f9cb96a219b790938ad68848e3436d1d3ed558f30ec605135d297417a7c70f0e37e
SSDEEP

24576:E301J529+RipvL1SXk1QE1RGOTnIEQc4au9NgxnHNn/fI4Ca7:EEI9+ApwXk1QE1RzsEQPaxHNXfZ

Score

10^/10

discovery evasion

Malware Config

Signatures

Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Processes:

tazebama.dl_

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1"	tazebama.dl_

Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Processes:

tazebama.dl_

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	tazebama.dl_

Executes dropped EXE 1 IoCs

Processes:

tazebama.dl_

pid process

1548 tazebama.dl_

pid	process
1548	tazebama.dl_

Loads dropped DLL 3 IoCs

Processes:

2024-11-21_46e0d77fd57690bbab3c8ded7015a79a_bkransomware.exe

pid	process
2604	2024-11-21_46e0d77fd57690bbab3c8ded7015a79a_bkransomware.exe
2604	2024-11-21_46e0d77fd57690bbab3c8ded7015a79a_bkransomware.exe
2604	2024-11-21_46e0d77fd57690bbab3c8ded7015a79a_bkransomware.exe

Enumerates connected drives 3 TTPs 21 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:

tazebama.dl_

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

Drops autorun.inf file 1 TTPs 3 IoCs

Malware can abuse Windows Autorun to spread further via attached volumes.

Replication Through Removable Media

T1091

Processes:

tazebama.dl_

description	ioc	process
File opened for modification	F:\autorun.inf	tazebama.dl_
File opened for modification	C:\autorun.inf	tazebama.dl_
File opened for modification	C:\Documents and Settings\Admin\Local Settings\Application Data\Microsoft\CD Burning\autorun.inf	tazebama.dl_

Drops file in Program Files directory 1 IoCs

Processes:

tazebama.dl_

description ioc process

File opened for modification C:\PROGRA~2\MICROS~1\OFFICE14\EXCEL.EXE tazebama.dl_

description	ioc	process
File opened for modification	C:\PROGRA~2\MICROS~1\OFFICE14\EXCEL.EXE	tazebama.dl_

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

2024-11-21_46e0d77fd57690bbab3c8ded7015a79a_bkransomware.exetazebama.dl_

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-11-21_46e0d77fd57690bbab3c8ded7015a79a_bkransomware.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tazebama.dl_

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

tazebama.dl_

pid process

1548 tazebama.dl_

pid	process
1548	tazebama.dl_

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-11-21_46e0d77fd57690bbab3c8ded7015a79a_bkransomware.exe

description	pid	process	target process
PID 2604 wrote to memory of 1548	2604	2024-11-21_46e0d77fd57690bbab3c8ded7015a79a_bkransomware.exe	tazebama.dl_
PID 2604 wrote to memory of 1548	2604	2024-11-21_46e0d77fd57690bbab3c8ded7015a79a_bkransomware.exe	tazebama.dl_
PID 2604 wrote to memory of 1548	2604	2024-11-21_46e0d77fd57690bbab3c8ded7015a79a_bkransomware.exe	tazebama.dl_
PID 2604 wrote to memory of 1548	2604	2024-11-21_46e0d77fd57690bbab3c8ded7015a79a_bkransomware.exe	tazebama.dl_

C:\Users\Admin\AppData\Local\Temp\2024-11-21_46e0d77fd57690bbab3c8ded7015a79a_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-21_46e0d77fd57690bbab3c8ded7015a79a_bkransomware.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2604
- C:\Documents and Settings\tazebama.dl_
  "C:\Documents and Settings\tazebama.dl_"
  2⤵
  - Modifies visibility of file extensions in Explorer
  - Modifies visiblity of hidden/system files in Explorer
  - Executes dropped EXE
  - Enumerates connected drives
  - Drops autorun.inf file
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:1548

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Replication Through Removable Media

1

T1091

Execution

Persistence

Privilege Escalation

Defense Evasion

Hide Artifacts

2

T1564

Hidden Files and Directories

Modify Registry

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Replication Through Removable Media

1

T1091

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\RCXA44C.tmp

Filesize
69KB

MD5
8ba404e90194c38541e324657e72f74c

SHA1
ad9fda28f95b7747579a7fbb8a18e1d1e6311a49

SHA256
8145e4c62390f9c55343cc6dadb790dc2cb9463c4f578fa57bf43f12c4720340

SHA512
1f594ebb6b970c9cb86b97d642351106a52db407c6e90db7391b50e97a1136e5ba13aeec66c9b985192c377d8c5c70d3746a00f37bcc83855fea316cf8d82362

Download Submit
C:\Users\tazebama.dl_

Filesize
149KB

MD5
2371fabd6555639e975c8b8a55f35643

SHA1
a642897675426cdf7d1f894657c1d4b3fbd08639

SHA256
900e6fc908e863f67af32e7d5915f14584ca6c48714a53d7b123ca1a21ee111a

SHA512
15c0c24d2e1e79339cbb8b030bcaa16be5c28b0e4f0bd43191f3bbf560defcf5b0d231587e52857b86126bdc5c50877ac2d7d4e2ec7969c520def32b78e58ff8

Download Submit
C:\autorun.inf

Filesize
126B

MD5
163e20cbccefcdd42f46e43a94173c46

SHA1
4c7b5048e8608e2a75799e00ecf1bbb4773279ae

SHA256
7780bee9df142a17e0457f3dcb2788b50fc2792370089335597d33719126fb7e

SHA512
e5ac0ff6b087857799ab70f68067c9dc73eeb93ccfcad87047052380b95ade3e6eb2a7d01a0f850d548a39f4b1ebb60e299d603dbe25c31b9a3585b34a0c65a8

Download Submit
C:\zPharaoh.exe

Filesize
150KB

MD5
c948516c70c062c4bfb300e6083ef413

SHA1
b9eaa64e87d28de5f4816998c0a834fd5d88e8b9

SHA256
19e59c763b7b9c031552869f763bdcfe0eaae41b0bd858cf814c757012b915bf

SHA512
4e53ab238aad43db5dd33da9fb27f8dbf0254e9a354bd8887041d457586506f0c7ee68f687752b637fe5a91f8c79b50bdd9ae688ee57c77d3f86848973a2cbab

Download Submit
F:\zPharaoh.exe

Filesize
149KB

MD5
e12ad03c46af88748973213b9e9b05d5

SHA1
182b05086db723ea4905cc8952849d6d18e88e40

SHA256
a6b3fc0d68c14cc8b1fac97f3e88990d9d8a7f174bfaff3a81fae7eb4a641f88

SHA512
d5af9f2c47de2de7cc6e3afe2ed5d4a02970722927bf2752e7a138f0f3dff2bc11f54c8a1e36678eb1d7369003629cc1458440be3e612f71edccd5414ea8e63c

Download Submit
\Users\tazebama.dll

Filesize
32KB

MD5
b6a03576e595afacb37ada2f1d5a0529

SHA1
d598d4d0e70dec2ffa2849edaeb4db94fedcc0b8

SHA256
1707eaf60aa91f3791aa5643bfa038e9d8141878d61f5d701ebac51f4ae7aaad

SHA512
181b7cc6479352fe2c53c3630d45a839cdeb74708be6709c2a75847a54de3ffc1fdac8450270dde7174ecb23e5cb002f8ce39032429a3112b1202f3381b8918c

Download Submit
memory/1548-16-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/1548-45-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/2604-12-0x0000000000250000-0x0000000000266000-memory.dmp

Filesize
88KB

Download
memory/2604-13-0x0000000000250000-0x0000000000266000-memory.dmp

Filesize
88KB

Download
memory/2604-15-0x0000000000400000-0x000000000054B000-memory.dmp

Filesize
1.3MB

Download
memory/2604-14-0x0000000000416000-0x0000000000422000-memory.dmp

Filesize
48KB

Download
memory/2604-5-0x0000000000400000-0x000000000054B000-memory.dmp

Filesize
1.3MB

Download
memory/2604-46-0x0000000000400000-0x000000000054B000-memory.dmp

Filesize
1.3MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads