fcb843e0542eaa1a4fa3fecca2b5cbb9704206125bd5a7c22cf8f1d2f08c7675

Analysis

max time kernel
142s
max time network
122s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
24/01/2024, 05:11

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General

Target

71883838b40689b04f383e758208a3c8.exe
Size

35KB
MD5

71883838b40689b04f383e758208a3c8
SHA1

d73dd125b2bed7eb3c0d714ef5c1a841de369112
SHA256

fcb843e0542eaa1a4fa3fecca2b5cbb9704206125bd5a7c22cf8f1d2f08c7675
SHA512

cc74fe2ddd2f060befb0610eda11aab86aaa035f591d5bf504d978e4a8da5a9b61d806ee381d33d3c9f4393ebf45855772920509a8c7b6e27f9b941c01c6a667
SSDEEP

768:X8Q2ZDX3LKew369lp2z3Sd4baFXLjwP/Tgj93b8NIom46+I1M:s9Z3KcR4mjD9r8226+r

Score

7^/10

persistence spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2756	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/2008-0-0x0000000000200000-0x0000000000217000-memory.dmp	upx
behavioral1/files/0x000e000000016d52-8.dat	upx
behavioral1/memory/2008-9-0x0000000000200000-0x0000000000217000-memory.dmp	upx
behavioral1/memory/2756-12-0x00000000008D0000-0x00000000008E7000-memory.dmp	upx
behavioral1/files/0x0009000000012261-14.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"	71883838b40689b04f383e758208a3c8.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	71883838b40689b04f383e758208a3c8.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2008	71883838b40689b04f383e758208a3c8.exe
Token: SeDebugPrivilege	2756	CTS.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2008 wrote to memory of 2756	2008	71883838b40689b04f383e758208a3c8.exe	28
PID 2008 wrote to memory of 2756	2008	71883838b40689b04f383e758208a3c8.exe	28
PID 2008 wrote to memory of 2756	2008	71883838b40689b04f383e758208a3c8.exe	28
PID 2008 wrote to memory of 2756	2008	71883838b40689b04f383e758208a3c8.exe	28

C:\Users\Admin\AppData\Local\Temp\71883838b40689b04f383e758208a3c8.exe
"C:\Users\Admin\AppData\Local\Temp\71883838b40689b04f383e758208a3c8.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2008
- 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:2756

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\Lq0memSzbftDemY.exe

Filesize
35KB

MD5
c7abb538838bbac7045cef4f6c49207d

SHA1
b22aaeeeb94559f36f1b999c5e32eb42737676bf

SHA256
83b6cc7f1430235239d9298fa24b4395f480b4a34cf0acbbb3a72125ad420a06

SHA512
23ae3146f384e29909940adb6798110ba773af7d99cc717c54b79d91d034bd48210f1b7e51e75ee5c0785530bd4c2e2eaea39e3760691eacc87bf0bcbb39e4ef

Download Submit
C:\Windows\CTS.exe

Filesize
35KB

MD5
93e5f18caebd8d4a2c893e40e5f38232

SHA1
fd55c4e6bcd108bce60ea719c06dc9c4d0adafa6

SHA256
a66c4b98becac2f69cb107cd087d7a2ca9ef511bc3b83367b1f440f11dd159a8

SHA512
986583610d27caae2080834301d072557c5d2c85e33f0d19ab1245d7eae8db146397461572ddb3d491be16f3af210720d54267dac838fdad8fe34afa3d6b7f54

Download Submit
memory/2008-0-0x0000000000200000-0x0000000000217000-memory.dmp

Filesize
92KB

Download
memory/2008-9-0x0000000000200000-0x0000000000217000-memory.dmp

Filesize
92KB

Download
memory/2008-11-0x0000000000070000-0x0000000000087000-memory.dmp

Filesize
92KB

Download
memory/2756-12-0x00000000008D0000-0x00000000008E7000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads