2577f8d939fcc3f8ccb2fdfff83dbff41fc8f1473d5fc5dd9462ec6ad20a4d8b

General

Target

2024-05-22_e2c0d4dbed2ec368a6da8b9e1c9663d6_bkransomware.exe
Size

96KB
MD5

e2c0d4dbed2ec368a6da8b9e1c9663d6
SHA1

3d3c4d4f6f7c3dd14fa721b428fb96671083c0ec
SHA256

2577f8d939fcc3f8ccb2fdfff83dbff41fc8f1473d5fc5dd9462ec6ad20a4d8b
SHA512

bbf5daa7aca1403fb4d153ef7b8b7cabf2cb749c06903f99a86c1c5fdd77348595fdd9b5af3187f903b61c097a2a0b78cb4af7d157a18576751f30211d63160c
SSDEEP

1536:Fc897UsWjcd9w+AyabjDbxE+MwmvlDuazTTPimgbwIzQ9yciUdqK:ZhpAyazIlyazTTWM9ynK

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

Processes:

zpGTdxvlZlJmp6X.exeCTS.exe

pid process

4104 zpGTdxvlZlJmp6X.exe
3540 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
4104	zpGTdxvlZlJmp6X.exe
3540	CTS.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

2024-05-22_e2c0d4dbed2ec368a6da8b9e1c9663d6_bkransomware.exeCTS.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-05-22_e2c0d4dbed2ec368a6da8b9e1c9663d6_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:

2024-05-22_e2c0d4dbed2ec368a6da8b9e1c9663d6_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-05-22_e2c0d4dbed2ec368a6da8b9e1c9663d6_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-05-22_e2c0d4dbed2ec368a6da8b9e1c9663d6_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 4000 2024-05-22_e2c0d4dbed2ec368a6da8b9e1c9663d6_bkransomware.exe
Token: SeDebugPrivilege 3540 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-05-22_e2c0d4dbed2ec368a6da8b9e1c9663d6_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	4000	2024-05-22_e2c0d4dbed2ec368a6da8b9e1c9663d6_bkransomware.exe
Token: SeDebugPrivilege	3540	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

2024-05-22_e2c0d4dbed2ec368a6da8b9e1c9663d6_bkransomware.exe

description	pid	process	target process
PID 4000 wrote to memory of 4104	4000	2024-05-22_e2c0d4dbed2ec368a6da8b9e1c9663d6_bkransomware.exe	zpGTdxvlZlJmp6X.exe
PID 4000 wrote to memory of 4104	4000	2024-05-22_e2c0d4dbed2ec368a6da8b9e1c9663d6_bkransomware.exe	zpGTdxvlZlJmp6X.exe
PID 4000 wrote to memory of 3540	4000	2024-05-22_e2c0d4dbed2ec368a6da8b9e1c9663d6_bkransomware.exe	CTS.exe
PID 4000 wrote to memory of 3540	4000	2024-05-22_e2c0d4dbed2ec368a6da8b9e1c9663d6_bkransomware.exe	CTS.exe
PID 4000 wrote to memory of 3540	4000	2024-05-22_e2c0d4dbed2ec368a6da8b9e1c9663d6_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_e2c0d4dbed2ec368a6da8b9e1c9663d6_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_e2c0d4dbed2ec368a6da8b9e1c9663d6_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4000

C:\Users\Admin\AppData\Local\Temp\zpGTdxvlZlJmp6X.exe
C:\Users\Admin\AppData\Local\Temp\zpGTdxvlZlJmp6X.exe
2⤵
- Executes dropped EXE
PID:4104

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:3540

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=1420 --field-trial-handle=2272,i,4858140932023865871,5726683989663339295,262144 --variations-seed-version /prefetch:8
1⤵
PID:3924

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
822a38fab5b6a771b67da06ccc30d9e8

SHA1
15d7b4e86ef6fe39f2f2429685eb84833299f377

SHA256
07158202f2b41b941e5b5800015c8cb29ea0ba73b2914197ec442f6f45684a71

SHA512
5478ee1cbd561b358cb22380735b0efd803891472657fe84a23f4e70e4fe6c9a20a897c139abec477b05f4e94bb6c07ea206c7a82e06c370cddfb03e01be6b43

Download Submit
C:\Users\Admin\AppData\Local\Temp\zpGTdxvlZlJmp6X.exe
Filesize
25KB

MD5
abbd49c180a2f8703f6306d6fa731fdc

SHA1
d63f4bfe7f74936b2fbace803e3da6103fbf6586

SHA256
5f411c0bd9ed9a42b0f07ed568c7d0cf358a83063b225a1f8f7da3296dde90f1

SHA512
290dd984acc451b778f3db8c510bae7aec1d9547c3ad0a1829df731c136e4ecc9a37dc6a786cf8f1ecc4d14339aed1288af25055f450f6f953138c8d4d5c36e9

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

MD5
66df4ffab62e674af2e75b163563fc0b

SHA1
dec8a197312e41eeb3cfef01cb2a443f0205cd6e

SHA256
075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163

SHA512
1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25

Download Submit
memory/4104-8-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads