19e161f5ae3b077ea7b2a0c7e92edb240286246f82d5d0902a1d7befb561918f

General

Target

2024-04-28_b873d770bf1a56a74c5dc3c1da875c79_bkransomware.exe
Size

135KB
MD5

b873d770bf1a56a74c5dc3c1da875c79
SHA1

50ffe7e2b9064bf3c91d28dfdd41ad3b2735abf4
SHA256

19e161f5ae3b077ea7b2a0c7e92edb240286246f82d5d0902a1d7befb561918f
SHA512

0f62f7bca17f23eb44ca0eef34fe640855b47a2bb061f1dec0e70ba24564185832b04a620b1b4829fade6f58c3dd275dc47d942a3dffccd1fe48cd67c0692720
SSDEEP

3072:ZRpAyazIliazTWQ8hmAnHPiETJ0pxf0XV52mtC:xZ8azqfznHPDVoslwwC

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

Processes:

lkhaFj9PARF7qnw.exeCTS.exe

pid process

2032 lkhaFj9PARF7qnw.exe
660 CTS.exe
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

pid	process
2032	lkhaFj9PARF7qnw.exe
660	CTS.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

2024-04-28_b873d770bf1a56a74c5dc3c1da875c79_bkransomware.exeCTS.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-04-28_b873d770bf1a56a74c5dc3c1da875c79_bkransomware.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	CTS.exe

Drops file in Windows directory 2 IoCs

Processes:

2024-04-28_b873d770bf1a56a74c5dc3c1da875c79_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-04-28_b873d770bf1a56a74c5dc3c1da875c79_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-04-28_b873d770bf1a56a74c5dc3c1da875c79_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 1744 2024-04-28_b873d770bf1a56a74c5dc3c1da875c79_bkransomware.exe
Token: SeDebugPrivilege 660 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-04-28_b873d770bf1a56a74c5dc3c1da875c79_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	1744	2024-04-28_b873d770bf1a56a74c5dc3c1da875c79_bkransomware.exe
Token: SeDebugPrivilege	660	CTS.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

2024-04-28_b873d770bf1a56a74c5dc3c1da875c79_bkransomware.exe

description	pid	process	target process
PID 1744 wrote to memory of 2032	1744	2024-04-28_b873d770bf1a56a74c5dc3c1da875c79_bkransomware.exe	lkhaFj9PARF7qnw.exe
PID 1744 wrote to memory of 2032	1744	2024-04-28_b873d770bf1a56a74c5dc3c1da875c79_bkransomware.exe	lkhaFj9PARF7qnw.exe
PID 1744 wrote to memory of 2032	1744	2024-04-28_b873d770bf1a56a74c5dc3c1da875c79_bkransomware.exe	lkhaFj9PARF7qnw.exe
PID 1744 wrote to memory of 660	1744	2024-04-28_b873d770bf1a56a74c5dc3c1da875c79_bkransomware.exe	CTS.exe
PID 1744 wrote to memory of 660	1744	2024-04-28_b873d770bf1a56a74c5dc3c1da875c79_bkransomware.exe	CTS.exe
PID 1744 wrote to memory of 660	1744	2024-04-28_b873d770bf1a56a74c5dc3c1da875c79_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-28_b873d770bf1a56a74c5dc3c1da875c79_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_b873d770bf1a56a74c5dc3c1da875c79_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1744

C:\Users\Admin\AppData\Local\Temp\lkhaFj9PARF7qnw.exe
C:\Users\Admin\AppData\Local\Temp\lkhaFj9PARF7qnw.exe
2⤵
- Executes dropped EXE
PID:2032

C:\Windows\CTS.exe
"C:\Windows\CTS.exe"
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:660

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4088 --field-trial-handle=2676,i,447940133669489189,1353734109898858672,262144 --variations-seed-version /prefetch:8
1⤵
PID:2232

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml
Filesize
789KB

MD5
877d2f5166ea27bd6a1430972490d67c

SHA1
2cec8e5f2a8d82417da7466e7e68001bee73006f

SHA256
2358f51d7ee09571edd70a51fdd13da03b58c8be4f7dfa16fd2fadd7c0c11053

SHA512
b32bc83c69d6d6804cf50adbd5979da234d54759179216f0fb7dc563de72b2047076be5bbcf7a065832fb1bef42448b6ef28a9378849c8ee84c9ba59383f7d3b

Download Submit
C:\Users\Admin\AppData\Local\Temp\lkhaFj9PARF7qnw.exe
Filesize
64KB

MD5
a32a382b8a5a906e03a83b4f3e5b7a9b

SHA1
11e2bdd0798761f93cce363329996af6c17ed796

SHA256
75f12ea2f30d9c0d872dade345f30f562e6d93847b6a509ba53beec6d0b2c346

SHA512
ec87dd957be21b135212454646dcabdd7ef9442cf714e2c1f6b42b81f0c3fa3b1875bde9a8b538e8a0aa2190225649c29e9ed0f25176e7659e55e422dd4efe4c

Download Submit
C:\Windows\CTS.exe
Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads