ea671b99033241a0c183e9fe81c0d8e764e1cffe4f10cfd152088e922f2f8dbe

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
28-04-2024 19:03

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General

Target

2024-04-28_29fa6da21e3bc4b3e28669c72690176d_bkransomware.exe
Size

7.3MB
MD5

29fa6da21e3bc4b3e28669c72690176d
SHA1

0815f2816775b125f5ce92fabfc39fbdae053d3a
SHA256

ea671b99033241a0c183e9fe81c0d8e764e1cffe4f10cfd152088e922f2f8dbe
SHA512

e76d2edbb1663042d2e63a7ced91e07a6ed17b3cdd113d409b062232a1b4024edb7653d72100c6718343e9770bd5c9c3e3339efb5056107fed2aa2485cc35aeb
SSDEEP

196608:pORMkloHRDcZEgWu7KQs6sYGUlLAWsuTE5NJ:pORSHRgZcQs6sYGUVAKiNJ

Score

9^/10

persistence spyware stealer

Malware Config

Signatures

Detects executables containing URLs to raw contents of a Github gist 2 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\IdoHVOqE3HmOo2u.exe	INDICATOR_SUSPICIOUS_EXE_RawGitHub_URL
behavioral2/memory/772-17-0x00000000005C0000-0x0000000000D06000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_RawGitHub_URL

Executes dropped EXE 2 IoCs

Processes:

IdoHVOqE3HmOo2u.exeCTS.exe

pid process

772 IdoHVOqE3HmOo2u.exe
1280 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
772	IdoHVOqE3HmOo2u.exe
1280	CTS.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

CTS.exe2024-04-28_29fa6da21e3bc4b3e28669c72690176d_bkransomware.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	CTS.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2024-04-28_29fa6da21e3bc4b3e28669c72690176d_bkransomware.exe

Drops file in Windows directory 2 IoCs

Processes:

2024-04-28_29fa6da21e3bc4b3e28669c72690176d_bkransomware.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 2024-04-28_29fa6da21e3bc4b3e28669c72690176d_bkransomware.exe
File created C:\Windows\CTS.exe CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	2024-04-28_29fa6da21e3bc4b3e28669c72690176d_bkransomware.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

2024-04-28_29fa6da21e3bc4b3e28669c72690176d_bkransomware.exeCTS.exeIdoHVOqE3HmOo2u.exe

description	pid	process
Token: SeDebugPrivilege	8	2024-04-28_29fa6da21e3bc4b3e28669c72690176d_bkransomware.exe
Token: SeDebugPrivilege	1280	CTS.exe
Token: SeDebugPrivilege	772	IdoHVOqE3HmOo2u.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

2024-04-28_29fa6da21e3bc4b3e28669c72690176d_bkransomware.exe

description	pid	process	target process
PID 8 wrote to memory of 772	8	2024-04-28_29fa6da21e3bc4b3e28669c72690176d_bkransomware.exe	IdoHVOqE3HmOo2u.exe
PID 8 wrote to memory of 772	8	2024-04-28_29fa6da21e3bc4b3e28669c72690176d_bkransomware.exe	IdoHVOqE3HmOo2u.exe
PID 8 wrote to memory of 1280	8	2024-04-28_29fa6da21e3bc4b3e28669c72690176d_bkransomware.exe	CTS.exe
PID 8 wrote to memory of 1280	8	2024-04-28_29fa6da21e3bc4b3e28669c72690176d_bkransomware.exe	CTS.exe
PID 8 wrote to memory of 1280	8	2024-04-28_29fa6da21e3bc4b3e28669c72690176d_bkransomware.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-28_29fa6da21e3bc4b3e28669c72690176d_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_29fa6da21e3bc4b3e28669c72690176d_bkransomware.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:8
- C:\Users\Admin\AppData\Local\Temp\IdoHVOqE3HmOo2u.exe
  C:\Users\Admin\AppData\Local\Temp\IdoHVOqE3HmOo2u.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:772
- 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:1280

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

Replay Monitor

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Downloads

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

Filesize
392KB

MD5
e70d0bd5b1ecb8358f4f92e297741e2b

SHA1
320d48439813bf2f720c77fc32aa5ebe1bc58f45

SHA256
99e7de03720d8d9e6f99c45070a3a15e09dae17fc8522c71e069ffdbe72e65ae

SHA512
983c7fb3d13cdc1a8ee561c88ad05b308cfc621cf465cc62490095a24a961b1859d0c16f8de807be9b5089b230178992d3563190054270904982cff17837d363

Download Submit
C:\Users\Admin\AppData\Local\Temp\IdoHVOqE3HmOo2u.exe

Filesize
7.3MB

MD5
dd6b75a77601d62ac66df1b0a51a7de3

SHA1
699fc35deccb0cd6e341420903fc993535c2c98f

SHA256
2f46a1d48e1589e0aa10f215e77cb48fb90c531e19aa3c05d766f59b449f3c15

SHA512
43bd57e5379c22494aade734a45a443722327d48c7f06aa521048c99adba576e29bd70bba7bd28ba94f8f24f88efed7b8e5a1b3249cbfcb4d95fd0bc1f424d86

Download Submit
C:\Users\Admin\AppData\Local\Temp\config\chocolatey.config.772.update

Filesize
9KB

MD5
14ffcf07375b3952bd3f2fe52bb63c14

SHA1
ab2eadde4c614eb8f1f2cae09d989c5746796166

SHA256
6ccfdb5979e715d12e597b47e1d56db94cf6d3a105b94c6e5f4dd8bab28ef5ed

SHA512
14a32151f7f7c45971b4c1adfb61f6af5136b1db93b50d00c6e1e3171e25b19749817b4e916d023ee1822caee64961911103087ca516cf6a0eafce1d17641fc4

Download Submit
C:\Users\Admin\AppData\Local\Temp\config\chocolatey.config.backup

Filesize
809B

MD5
8b6737800745d3b99886d013b3392ac3

SHA1
bb94da3f294922d9e8d31879f2d145586a182e19

SHA256
86f10504ca147d13a157944f926141fe164a89fa8a71847458bda7102abb6594

SHA512
654dda9b645b4900ac6e5bb226494921194dab7de71d75806f645d9b94ed820055914073ef9a5407e468089c0b2ee4d021f03c2ea61e73889b553895e79713df

Download Submit
C:\Users\Admin\AppData\Local\Temp\logs\chocolatey.log

Filesize
4KB

MD5
34b6d8b6fefc2f230054861aa810a315

SHA1
7c77a526fbfe7d1d57b0d76cfdf50525c0b1042c

SHA256
36a10c6d012858e9441178ed747e936dd54f103f859afa2ed5adfce86364295c

SHA512
8dee3875f37343015543414a6497bf416cc8f374f989af8adbb590f0cd957bfb7566b59b62ff67c642804fd026f0c7af34706f9c09a4595300ed5bedf73886cb

Download Submit
C:\Users\Admin\AppData\Local\Temp\logs\chocolatey.log

Filesize
798B

MD5
222e902ba8d5ab8c22d5d5ae5c7528f1

SHA1
5e035b655a972c7a5f46e054103e0560c53794c4

SHA256
288d877b0c15c488898354effeedf7f5de3aab4f1f30590c66f075418fb19144

SHA512
36c67543216630f6362afdebcd5a9aad898ab58cfd7d4b0c63b8c078b8f745efab8abefdda547ac5231560ca8bd659b6e90a827c4dbe44c55b317c803d98c8ca

Download Submit
C:\Users\Admin\AppData\Local\Temp\logs\chocolatey.log

Filesize
2KB

MD5
7f00210c3e79f4f575d924a372611607

SHA1
d6ef13d54793e5636f874093b4ba1046561dfb72

SHA256
ca17415e84594e805c06401b5c3376ba7fce1327f4f482ae47216448c534ef49

SHA512
b8bb40d912017e8e2aee53bc83cf7b8e4d26aa1e0ce339a5f664f20bda7d3e0fe73e833c0a8fc112248d2511b6fa765053d283cd61c665fffee26aa80ca6ba9a

Download Submit
C:\Users\Admin\AppData\Local\Temp\redirects\cpush.exe.ignore

Filesize
2B

MD5
81051bcc2cf1bedf378224b0a93e2877

SHA1
ba8ab5a0280b953aa97435ff8946cbcbb2755a27

SHA256
7eb70257593da06f682a3ddda54a9d260d4fc514f645237f5ca74b08f8da61a6

SHA512
1b302a2f1e624a5fb5ad94ddc4e5f8bfd74d26fa37512d0e5face303d8c40eee0d0ffa3649f5da43f439914d128166cb6c4774a7caa3b174d7535451eb697b5d

Download Submit
C:\Windows\CTS.exe

Filesize
71KB

MD5
f9d4ab0a726adc9b5e4b7d7b724912f1

SHA1
3d42ca2098475924f70ee4a831c4f003b4682328

SHA256
b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc

SHA512
22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432

Download Submit
memory/772-34-0x0000000002DA0000-0x0000000002DC0000-memory.dmp

Filesize
128KB

Download
memory/772-25-0x00007FFBAB020000-0x00007FFBABAE1000-memory.dmp

Filesize
10.8MB

Download
memory/772-61-0x000000001DA60000-0x000000001DAB0000-memory.dmp

Filesize
320KB

Download
memory/772-62-0x000000001DB30000-0x000000001DBA6000-memory.dmp

Filesize
472KB

Download
memory/772-63-0x0000000002DE0000-0x0000000002DFE000-memory.dmp

Filesize
120KB

Download
memory/772-26-0x000000001B9E0000-0x000000001B9F0000-memory.dmp

Filesize
64KB

Download
memory/772-17-0x00000000005C0000-0x0000000000D06000-memory.dmp

Filesize
7.3MB

Download
memory/772-168-0x00007FFBAB020000-0x00007FFBABAE1000-memory.dmp

Filesize
10.8MB

Download