f8565e12ae40ede0486d3977f3ffb2031c3d752dbbb5b19a93cb35e1fae69b1a

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
26/12/2023, 12:38

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General

Target
6f15110b0d71d037b6b924e5b9c1755c.exe
Size 116KB
Sample231226-pt2k7sddf7
SHA256 f8565e12ae40ede0486d3977f3ffb2031c3d752dbbb5b19a93cb35e1fae69b1a
MD5 6f15110b0d71d037b6b924e5b9c1755c
SHA1 061cf0ebc44e0cbcb025b964a088c463d5d876a9
SHA512 1b6e21afdd915a7c74dc3bd8aa8ad3c565ce8950f31e14f217acf89c2b99ebe3e4a5b42110368bd0a8951b99ade77adef11b3a4e9ede52ed6a1e492751fcbb6b
SSDEEP 3072:SKcWmjRrz3OistUstilu0Ep8M0dLjwXLTk:hGOistntTRp8M0+XLTk
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

persistence spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
3496	R0wfNaAGFEwTtEe.exe
4068	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
behavioral2/memory/3692-0-0x0000000000FC0000-0x0000000000FD7000-memory.dmp	upx
behavioral2/memory/4068-9-0x00000000003D0000-0x00000000003E7000-memory.dmp	upx
behavioral2/files/0x00080000000231f7-8.dat	upx
behavioral2/memory/3692-7-0x0000000000FC0000-0x0000000000FD7000-memory.dmp	upx
behavioral2/files/0x0006000000022765-13.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"	CTS.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	6f15110b0d71d037b6b924e5b9c1755c.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	6f15110b0d71d037b6b924e5b9c1755c.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3692	6f15110b0d71d037b6b924e5b9c1755c.exe
Token: SeDebugPrivilege	4068	CTS.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3692 wrote to memory of 3496	3692	6f15110b0d71d037b6b924e5b9c1755c.exe	19
PID 3692 wrote to memory of 3496	3692	6f15110b0d71d037b6b924e5b9c1755c.exe	19
PID 3692 wrote to memory of 3496	3692	6f15110b0d71d037b6b924e5b9c1755c.exe	19
PID 3692 wrote to memory of 4068	3692	6f15110b0d71d037b6b924e5b9c1755c.exe	15
PID 3692 wrote to memory of 4068	3692	6f15110b0d71d037b6b924e5b9c1755c.exe	15
PID 3692 wrote to memory of 4068	3692	6f15110b0d71d037b6b924e5b9c1755c.exe	15

C:\Users\Admin\AppData\Local\Temp\6f15110b0d71d037b6b924e5b9c1755c.exe
"C:\Users\Admin\AppData\Local\Temp\6f15110b0d71d037b6b924e5b9c1755c.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3692
- 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:4068
- C:\Users\Admin\AppData\Local\Temp\R0wfNaAGFEwTtEe.exe
  C:\Users\Admin\AppData\Local\Temp\R0wfNaAGFEwTtEe.exe
  2⤵
  - Executes dropped EXE
  PID:3496

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

excel.exe_Rules.xml

Path C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml
Size 352KB
SHA256 363b7d746f3c316de3ab795ed2ae3e38a5aee3f411ce3f6bfcaa7ea3af8fa8d4
MD5 3cc355085e383a446b1365f64a975fa4
SHA1 63075cc51f5ae948b013edd458026779e2d8459c
SHA512 e7a7cfc7d9f7ab01cd67b3e614e69874e721f91a66389a6b9f82be0f49959bb0f1ab940dc882ac7cce06a49deace83f68144a33b0250a843cb911d8a81fe8cb0
SSDEEP 6144:hGBhyk3EKUx2uz1a16Jh1N9gt98JBOWYCT1+ZJ0sQcDk3zw4t:heLUxQ6JTs4BfT1+ZJNnkDw4
MD5 SHA1 SHA512 SSDEEP

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R0wfNaAGFEwTtEe.exe

Path C:\Users\Admin\AppData\Local\Temp\R0wfNaAGFEwTtEe.exe
Size 87KB
SHA256 3212cacc4d669f381ad1048e43726ec2841de32135438992c55f792bf03beafc
MD5 015207664f86b0d334146d7bc7551a0f
SHA1 b466beca074c3c4a500bfa00fd691cf0fe300d8c
SHA512 6ced0d294fd9c330cab20739336c6cd4c1e202d521fd41c6fd6bdfe7e720247c84ac10a7e25855d3cc9b08f2d9251798eb52383527a9363c5126a6b205ff0657
SSDEEP 1536:Zcf4QDVsYYkzg7+5GCwW+ocwu7GKbsTbnWqPbLI5FfHYTokoYw:ZcPJ5GSLcwurwLIvfHYTokvw
MD5 SHA1 SHA512 SSDEEP

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CTS.exe

Path C:\Windows\CTS.exe
Size 29KB
SHA256 9d25cc704b1c00c9d17903e25ca35c319663e997cb9da0b116790b639e9688f2
MD5 70aa23c9229741a9b52e5ce388a883ac
SHA1 b42683e21e13de3f71db26635954d992ebe7119e
SHA512 be604a2ad5ab8a3e5edb8901016a76042ba873c8d05b4ef8eec31241377ec6b2a883b51c6912dc7640581ffa624547db334683975883ae74e62808b5ae9ab0b5
SSDEEP 768:XocAX3LKew369lp2z3Sd4baFXLjwP/Tgj93b8NIocVSEF:SKcR4mjD9r823F
MD5 SHA1 SHA512 SSDEEP

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memory/3692-0-0x0000000000FC0000-0x0000000000FD7000-memory.dmp

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memory/3692-7-0x0000000000FC0000-0x0000000000FD7000-memory.dmp

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memory/4068-9-0x00000000003D0000-0x00000000003E7000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads