e9f21f7a183286663b924fec9ba05ae12371ae025cd90a1c266a4de5715e1713

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
13/01/2024, 20:30

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General

Target

5958547ed8657e03e97ea115f6620685.exe
Size

178KB
MD5

5958547ed8657e03e97ea115f6620685
SHA1

d17d55dda9943bd27e2e109dc152b6d6d5b0f890
SHA256

e9f21f7a183286663b924fec9ba05ae12371ae025cd90a1c266a4de5715e1713
SHA512

de0b6763f14b3bdca07dfc68e1c5692f4174edf4bb88bd884254cca8931925d45f21622c615b2e0289cce9a2559a8a75edcc4d1591759eef628a09d4f5eb538c
SSDEEP

3072:SKcWmjRrz3b3E9VJowxP+urbyqo0LNj13dzfFeT9vCSVRAn0YJGMbzKRdicMTtaD:hG4TGwB7NfFeTJCSVTyGmW51iq9

Score

7^/10

persistence spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
1344	fzhkchNepU0M2CG.exe
4156	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/4348-0-0x0000000000BD0000-0x0000000000BE7000-memory.dmp	upx
behavioral2/files/0x000a000000023146-6.dat	upx
behavioral2/memory/4348-7-0x0000000000BD0000-0x0000000000BE7000-memory.dmp	upx
behavioral2/memory/4156-9-0x0000000000E20000-0x0000000000E37000-memory.dmp	upx
behavioral2/files/0x000800000001e0b8-13.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"	5958547ed8657e03e97ea115f6620685.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	5958547ed8657e03e97ea115f6620685.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4348	5958547ed8657e03e97ea115f6620685.exe
Token: SeDebugPrivilege	4156	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4348 wrote to memory of 1344	4348	5958547ed8657e03e97ea115f6620685.exe	88
PID 4348 wrote to memory of 1344	4348	5958547ed8657e03e97ea115f6620685.exe	88
PID 4348 wrote to memory of 4156	4348	5958547ed8657e03e97ea115f6620685.exe	90
PID 4348 wrote to memory of 4156	4348	5958547ed8657e03e97ea115f6620685.exe	90
PID 4348 wrote to memory of 4156	4348	5958547ed8657e03e97ea115f6620685.exe	90

C:\Users\Admin\AppData\Local\Temp\5958547ed8657e03e97ea115f6620685.exe
"C:\Users\Admin\AppData\Local\Temp\5958547ed8657e03e97ea115f6620685.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4348
- C:\Users\Admin\AppData\Local\Temp\fzhkchNepU0M2CG.exe
  C:\Users\Admin\AppData\Local\Temp\fzhkchNepU0M2CG.exe
  2⤵
  - Executes dropped EXE
  PID:1344
- 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:4156

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
352KB

MD5
c2c109ff4d125bb6107d2591431c3fc5

SHA1
3005f8f0798fc8ffbd12e5a2980a73bfffa49441

SHA256
a6c97be07a1e599924662e469fe2aec740eb3520ae96c73989e79a819c7e1ba5

SHA512
5b7c1d0765231b688e1b27da7c5f92ccfc6ac95d7d5c6e6f264cbe9c7db4e3c76841515e8eea44a8ca1484b989399ecd182fcf7889023e83baa20b103a603442

Download Submit
C:\Users\Admin\AppData\Local\Temp\fzhkchNepU0M2CG.exe

Filesize
148KB

MD5
089594c58b56cd5f212833351234cb23

SHA1
e0538ff0dceb85e4a4e798b4ac1ab01125e760d8

SHA256
1a55a42cdbb5415d2f51ddd6fabd63a5de62575a31b6c59010dd2618d1484948

SHA512
189a9b3e11c57fe28db29aad38f91052dea1a253eb343c4ccc9ce20d3506e1ae27fc4357a6bcef4a07319a40450e02eea8d9f081ac17e1dd13882f20c8d1ec83

Download Submit
C:\Windows\CTS.exe

Filesize
29KB

MD5
70aa23c9229741a9b52e5ce388a883ac

SHA1
b42683e21e13de3f71db26635954d992ebe7119e

SHA256
9d25cc704b1c00c9d17903e25ca35c319663e997cb9da0b116790b639e9688f2

SHA512
be604a2ad5ab8a3e5edb8901016a76042ba873c8d05b4ef8eec31241377ec6b2a883b51c6912dc7640581ffa624547db334683975883ae74e62808b5ae9ab0b5

Download Submit
memory/4156-9-0x0000000000E20000-0x0000000000E37000-memory.dmp

Filesize
92KB

Download
memory/4348-0-0x0000000000BD0000-0x0000000000BE7000-memory.dmp

Filesize
92KB

Download
memory/4348-7-0x0000000000BD0000-0x0000000000BE7000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads