d4b183dc2599f0a475ffabfbe73e12dbee5645181cec1be8056e97edcba896e0

General

Target

2024-05-24_c92a370bc94c4d642f649dfe6712c878_bkransomware.exe
Size

170KB
MD5

c92a370bc94c4d642f649dfe6712c878
SHA1

50f45776b643273c2ce12c11fd8d92342ec1aaef
SHA256

d4b183dc2599f0a475ffabfbe73e12dbee5645181cec1be8056e97edcba896e0
SHA512

500afe0979a77a66a3824a0b60c70400321e1eaecd2a45e111f61165ebba8f4e57db609e16356cf35af6e176feee3f2d5ba5029cd8b078bb537f79524a06870a
SSDEEP

3072:ZRpAyazIliazTyqy/P+/TCuhgem68WdoKignDGb4ZbRD0hksJe9rcTj:xZ8azLy/PKTf78WdoEGEZbRDhsgc/

Score

7^/10

persistence spyware stealer

Malware Config

Signatures

Executes dropped EXE 2 IoCs

Processes:

jqPrXB8OhByt5F8.exeCTS.exe

pid process

4732 jqPrXB8OhByt5F8.exe
3688 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
4732	jqPrXB8OhByt5F8.exe
3688	CTS.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

2024-05-24_c92a370bc94c4d642f649dfe6712c878_bkransomware.exeCTS.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-05-24_c92a370bc94c4d642f649dfe6712c878_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:

2024-05-24_c92a370bc94c4d642f649dfe6712c878_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-05-24_c92a370bc94c4d642f649dfe6712c878_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

2024-05-24_c92a370bc94c4d642f649dfe6712c878_bkransomware.exeCTS.exe

description pid process

Token: SeDebugPrivilege 4596 2024-05-24_c92a370bc94c4d642f649dfe6712c878_bkransomware.exe
Token: SeDebugPrivilege 3688 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-05-24_c92a370bc94c4d642f649dfe6712c878_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	4596	2024-05-24_c92a370bc94c4d642f649dfe6712c878_bkransomware.exe
Token: SeDebugPrivilege	3688	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

2024-05-24_c92a370bc94c4d642f649dfe6712c878_bkransomware.exe

description	pid	process	target process
PID 4596 wrote to memory of 4732	4596	2024-05-24_c92a370bc94c4d642f649dfe6712c878_bkransomware.exe	jqPrXB8OhByt5F8.exe
PID 4596 wrote to memory of 4732	4596	2024-05-24_c92a370bc94c4d642f649dfe6712c878_bkransomware.exe	jqPrXB8OhByt5F8.exe
PID 4596 wrote to memory of 3688	4596	2024-05-24_c92a370bc94c4d642f649dfe6712c878_bkransomware.exe	CTS.exe
PID 4596 wrote to memory of 3688	4596	2024-05-24_c92a370bc94c4d642f649dfe6712c878_bkransomware.exe	CTS.exe
PID 4596 wrote to memory of 3688	4596	2024-05-24_c92a370bc94c4d642f649dfe6712c878_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-24_c92a370bc94c4d642f649dfe6712c878_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_c92a370bc94c4d642f649dfe6712c878_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4596

C:\Users\Admin\AppData\Local\Temp\jqPrXB8OhByt5F8.exe
C:\Users\Admin\AppData\Local\Temp\jqPrXB8OhByt5F8.exe
2⤵
- Executes dropped EXE
PID:4732

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:3688

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=3896 --field-trial-handle=2356,i,13261194862334667799,7441241219475888176,262144 --variations-seed-version /prefetch:8
1⤵
PID:4600

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
499a517ad72c12c03b1af73f12f4d1d7

SHA1
9b6ba61a9da2ef89ff1d726eabda79887be04049

SHA256
e89d639056e628825a31a8a2509da592671f54e3e48f7273cb30c974e2d37789

SHA512
e725d81fa448742d43b4f8ab523dad27057e5fe2b9b1e1fbe96bc8a3b65081312843e433644659475341bd5eaa1adb239e4a94f57a41b6ca0712f4ed30958763

Download Submit
C:\Users\Admin\AppData\Local\Temp\jqPrXB8OhByt5F8.exe
Filesize
99KB

MD5
858ebee7967c29636b41c1e8a0e8b87e

SHA1
2cd8b2c8bffbb3975d38e1d2f9947ebd41f79a8b

SHA256
5461dc2638243541e94ba64ee008d0ff0663a48186d85050bf5ad3200af773de

SHA512
549e6d703e528939732036d928be96ceff6ec082b8d245fe37d71f94da6e02bf7cab0a3bd51b3f72aa5c44bec041101fd81fa6d92a519d5eadae921fde5b08bc

Download Submit
C:\Users\Admin\AppData\Local\Temp\jqPrXB8OhByt5F8.exe
Filesize
99KB

MD5
af88cab288e8213a11a7ea5313363d31

SHA1
cb769e3246d5244a0040621e919f7c519ba49986

SHA256
7407fac6e170430f34322202b73aa392431b5c2c49e15304fb255bb24c540366

SHA512
a4e353fcb78579345d4c5bc1f48970b473e0499dfe5bc6abeffb669295fa2940ce8637045a11f881fe88dd9b97d380ae9a8eed1b94fbd47181e0b4eb427e9679

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