1087577c201b1a5c54105a7ec45fe526c72ff63958c63a1795e5346a7eff2e33

Analysis

max time kernel
142s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
26/05/2024, 21:22

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General

Target

2024-05-26_0df64690ba45b57d3a39f0a4c9132477_bkransomware.exe
Size

71KB
MD5

0df64690ba45b57d3a39f0a4c9132477
SHA1

a67efc968af5e4c98d978e6e4881bc10e4f7a62e
SHA256

1087577c201b1a5c54105a7ec45fe526c72ff63958c63a1795e5346a7eff2e33
SHA512

4c7e73bb15dc099c0801666a1154a7a0f621fb330328b898d15893e6a6f7d3807ffdca1dc79770002b2b5ad5c461d9d8e4e35b995e0f3b09c23667a32d5ac330
SSDEEP

1536:Fc8N7UsWjcd9w+AyabjDbxE+MwmvlzuazTy:ZRpAyazIliazTy

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1584	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

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-05-26_0df64690ba45b57d3a39f0a4c9132477_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

description	ioc	Process
File created	C:\Windows\CTS.exe	2024-05-26_0df64690ba45b57d3a39f0a4c9132477_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2548	2024-05-26_0df64690ba45b57d3a39f0a4c9132477_bkransomware.exe
Token: SeDebugPrivilege	1584	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2548 wrote to memory of 1584	2548	2024-05-26_0df64690ba45b57d3a39f0a4c9132477_bkransomware.exe	90
PID 2548 wrote to memory of 1584	2548	2024-05-26_0df64690ba45b57d3a39f0a4c9132477_bkransomware.exe	90
PID 2548 wrote to memory of 1584	2548	2024-05-26_0df64690ba45b57d3a39f0a4c9132477_bkransomware.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-05-26_0df64690ba45b57d3a39f0a4c9132477_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-26_0df64690ba45b57d3a39f0a4c9132477_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2548
- 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:1584

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=3088,i,14310325015283915034,7660943942870463106,262144 --variations-seed-version /prefetch:8
1⤵
PID:1636

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
789KB

MD5
c3050c98baeea9cc45c476ce671e6bfe

SHA1
f544dcd11996b4ab676bbb91dba8cdf5c1095e18

SHA256
3e0c302e2f0a460a0be0ca6c6d654f4c9edb9b705b1e0463dd06b6361412ccf5

SHA512
eb3d46e4d60201775f12e9831346f10b09ed09ede1ca721751b8578a46e7613cb5180a1f6d3375cc6e4d15ca9358ab593a025a72e6d857d15d4185dbe4589ee4

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C:\Users\Admin\AppData\Local\Temp\SOoqI6BC9Jp7NAq.exe

Filesize
71KB

MD5
fee5ed83a540448b18fe9fc95b7ea22e

SHA1
bf8948906c7dd2ba4c0a326de512e6aee7b86c90

SHA256
878c90f0600ea1d235b17c753e4f5b40941f26c7b2203c12d8fc46a780df6eeb

SHA512
5168e3c139a64f4061c4d14ccaeaae3d11c9beacca8e860527f22fea7a8fded6dfdd8c6069508e95367e139f4c1d82afbddc14ffe211a473a2300202cb574119

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C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads