7e46d8ba278ef2a52d0f084ae101f3e30345193d63e5ee33d749e33cd713d0d0

Analysis

max time kernel
141s
max time network
125s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
04/01/2024, 15:48

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General

Target

41456c2676737a75b73e8941282214c1.exe
Size

30KB
MD5

41456c2676737a75b73e8941282214c1
SHA1

4d20e360aad6a097a30a0f006664d06e51632810
SHA256

7e46d8ba278ef2a52d0f084ae101f3e30345193d63e5ee33d749e33cd713d0d0
SHA512

a4fc20715317f3b9fd332af6f9c57597e45012e6979dfbe98ac789a95ed48fec18e791c7135a175e560f21eda2bc8773327ddc90544cd6512e2216d3ba7bee40
SSDEEP

768:XocAX3LKew369lp2z3Sd4baFXLjwP/Tgj93b8NIocVSEFm6s:SKcR4mjD9r823FmJ

Score

7^/10

persistence spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1980	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 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2912-0-0x00000000001C0000-0x00000000001D7000-memory.dmp	upx
behavioral1/memory/2912-8-0x00000000001C0000-0x00000000001D7000-memory.dmp	upx
behavioral1/files/0x000d000000012716-10.dat	upx
behavioral1/memory/1980-12-0x0000000000310000-0x0000000000327000-memory.dmp	upx
behavioral1/files/0x000c000000012247-15.dat	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"	41456c2676737a75b73e8941282214c1.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	41456c2676737a75b73e8941282214c1.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2912	41456c2676737a75b73e8941282214c1.exe
Token: SeDebugPrivilege	1980	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2912 wrote to memory of 1980	2912	41456c2676737a75b73e8941282214c1.exe	28
PID 2912 wrote to memory of 1980	2912	41456c2676737a75b73e8941282214c1.exe	28
PID 2912 wrote to memory of 1980	2912	41456c2676737a75b73e8941282214c1.exe	28
PID 2912 wrote to memory of 1980	2912	41456c2676737a75b73e8941282214c1.exe	28

C:\Users\Admin\AppData\Local\Temp\41456c2676737a75b73e8941282214c1.exe
"C:\Users\Admin\AppData\Local\Temp\41456c2676737a75b73e8941282214c1.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2912
- 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:1980

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\Temp\GulKyinRFTMxF9B.exe

Filesize
30KB

MD5
1fdf17ca855e428e778f05f242aab041

SHA1
9cf75c5f8dab2dbca33bc208cddd2e7f92027a45

SHA256
36ae75ea44b68ebddb417e3da8e40bafbf87096432b0bc3cff39d713843896d1

SHA512
26b20b9de89c956119a4ea3fe9961450ac286d46f36627c8d374f7f740df4b27ff456a15d4e6116302f3740c67c8cb42d659e76fa0ea5e714fe57ba4cfefe8c2

Download Submit
C:\Windows\CTS.exe

Filesize
29KB

MD5
70aa23c9229741a9b52e5ce388a883ac

SHA1
b42683e21e13de3f71db26635954d992ebe7119e

SHA256
9d25cc704b1c00c9d17903e25ca35c319663e997cb9da0b116790b639e9688f2

SHA512
be604a2ad5ab8a3e5edb8901016a76042ba873c8d05b4ef8eec31241377ec6b2a883b51c6912dc7640581ffa624547db334683975883ae74e62808b5ae9ab0b5

Download Submit
memory/1980-12-0x0000000000310000-0x0000000000327000-memory.dmp

Filesize
92KB

Download
memory/2912-0-0x00000000001C0000-0x00000000001D7000-memory.dmp

Filesize
92KB

Download
memory/2912-8-0x00000000001C0000-0x00000000001D7000-memory.dmp

Filesize
92KB

Download
memory/2912-11-0x0000000000070000-0x0000000000087000-memory.dmp

Filesize
92KB

Download
memory/2912-19-0x0000000000070000-0x0000000000087000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads