f6dbee1def013e826e7e6443fb5e6811b0c144a52aac0fd7ea2efde5d14a441e

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
24-02-2024 12:34

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General

Target

a1e0aa00cd3870eedab0a6a4ff542f85.exe
Size

29KB
MD5

a1e0aa00cd3870eedab0a6a4ff542f85
SHA1

6e7249122a8a3d45569d2309e68ad3bf8afa421f
SHA256

f6dbee1def013e826e7e6443fb5e6811b0c144a52aac0fd7ea2efde5d14a441e
SHA512

a77eb25b943196ebffae47b7cdd7af2c5c952aea2254c478e4be5d075deafd0934317af2972e1ba822d3f897032b7de5bb3f1ec9bd423413ae6a9a10f29a828b
SSDEEP

768:XocAX3LKew369lp2z3Sd4baFXLjwP/Tgj93b8NIocVSEFf:SKcR4mjD9r823Ff

Score

7^/10

persistence spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
640	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

UPX packed file 7 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/4432-0-0x00000000004C0000-0x00000000004D7000-memory.dmp	upx
behavioral2/files/0x000700000002321b-6.dat	upx
behavioral2/memory/4432-9-0x00000000004C0000-0x00000000004D7000-memory.dmp	upx
behavioral2/memory/640-7-0x0000000000850000-0x0000000000867000-memory.dmp	upx
behavioral2/files/0x0003000000022765-12.dat	upx
behavioral2/files/0x0007000000023218-29.dat	upx
behavioral2/memory/640-31-0x0000000000850000-0x0000000000867000-memory.dmp	upx

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"	a1e0aa00cd3870eedab0a6a4ff542f85.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	a1e0aa00cd3870eedab0a6a4ff542f85.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4432	a1e0aa00cd3870eedab0a6a4ff542f85.exe
Token: SeDebugPrivilege	640	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4432 wrote to memory of 640	4432	a1e0aa00cd3870eedab0a6a4ff542f85.exe	87
PID 4432 wrote to memory of 640	4432	a1e0aa00cd3870eedab0a6a4ff542f85.exe	87
PID 4432 wrote to memory of 640	4432	a1e0aa00cd3870eedab0a6a4ff542f85.exe	87

C:\Users\Admin\AppData\Local\Temp\a1e0aa00cd3870eedab0a6a4ff542f85.exe
"C:\Users\Admin\AppData\Local\Temp\a1e0aa00cd3870eedab0a6a4ff542f85.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4432
- 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:640

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
351KB

MD5
baa57aad0d0ccc411c0acc484427db4c

SHA1
b06bf06276d1e0a1f2ef8b2b97683c184c251abc

SHA256
3cae67ba7d7f30cb3a8f9634d05ae2c3fcb20eb7d1f6b4250201b70bcc7ee4eb

SHA512
ab3d2f84d6884da64ce21650e2e0f787b4c290ed3c36f028d1a4657b17de75888e5b145fe69310145b8901b97076466c4bc3af6125225151450e779be5c2dde3

Download Submit
C:\Users\Admin\AppData\Local\Temp\MwQtvR1vec4ExN7.exe

Filesize
29KB

MD5
f886944abef4f7910bbdc4ce86a99845

SHA1
4c3fd644357c54615a46a0b4fc9efbbb76ac523e

SHA256
4320ab0c3b82afebec7eb6f9bc8a615a15ef440a86329fc0f639046b22324591

SHA512
fd2e45bea9b81a01e54b154a564c88504601eac3dd2693324f42ff057460aa37bb3d2ef058144792db10eab734ed9b0728466f87b2a9ae5defc3bacb27c4f6d7

Download Submit
C:\Windows\CTS.exe

Filesize
29KB

MD5
70aa23c9229741a9b52e5ce388a883ac

SHA1
b42683e21e13de3f71db26635954d992ebe7119e

SHA256
9d25cc704b1c00c9d17903e25ca35c319663e997cb9da0b116790b639e9688f2

SHA512
be604a2ad5ab8a3e5edb8901016a76042ba873c8d05b4ef8eec31241377ec6b2a883b51c6912dc7640581ffa624547db334683975883ae74e62808b5ae9ab0b5

Download Submit
memory/640-7-0x0000000000850000-0x0000000000867000-memory.dmp

Filesize
92KB

Download
memory/640-31-0x0000000000850000-0x0000000000867000-memory.dmp

Filesize
92KB

Download
memory/4432-0-0x00000000004C0000-0x00000000004D7000-memory.dmp

Filesize
92KB

Download
memory/4432-9-0x00000000004C0000-0x00000000004D7000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads