4b733b1ce688db9ffc76d70ccd703af868d654f8f0dd48a047efa8f4d4a2e999

General

Target

4b733b1ce688db9ffc76d70ccd703af868d654f8f0dd48a047efa8f4d4a2e999.exe
Size

91KB
MD5

e84c7a9503d07bf74326ee6d36d3e1b2
SHA1

3b9262f7ab13f42b7ce497a9437307793f772fed
SHA256

4b733b1ce688db9ffc76d70ccd703af868d654f8f0dd48a047efa8f4d4a2e999
SHA512

6398d55f027b41c1f66debffa05b1b2fa399a108e38ba7c7a0eebcc13f4a47aacde5c43d432ac7c3014b7b43cb1de09da26d22183412d18c4b15d7e3d15b995d
SSDEEP

1536:N5VzcfA/6LrVpL74gfh16nIartYXG+wHGPYpKx25lZNipbJN0LKdrMd7jHsin:/V2A/gVh74gpgIutG1wmgpRZW0Lqsd

Score

9^/10

Malware Config

Signatures

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/1720-0-0x0000000000100000-0x0000000000118000-memory.dmp	UPX
behavioral1/files/0x000c000000013187-16.dat	UPX
behavioral1/memory/1720-14-0x0000000000100000-0x0000000000118000-memory.dmp	UPX
behavioral1/memory/2976-19-0x0000000000250000-0x0000000000268000-memory.dmp	UPX
behavioral1/memory/1720-26-0x00000000000B0000-0x00000000000C8000-memory.dmp	UPX

Executes dropped EXE 2 IoCs

pid	Process
2384	l18w8uRoI8rfuMn.exe
2976	CTS.exe

Loads dropped DLL 2 IoCs

pid	Process
1720	4b733b1ce688db9ffc76d70ccd703af868d654f8f0dd48a047efa8f4d4a2e999.exe
1720	4b733b1ce688db9ffc76d70ccd703af868d654f8f0dd48a047efa8f4d4a2e999.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 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1720-0-0x0000000000100000-0x0000000000118000-memory.dmp	upx
behavioral1/files/0x000c000000013187-16.dat	upx
behavioral1/memory/1720-14-0x0000000000100000-0x0000000000118000-memory.dmp	upx
behavioral1/memory/2976-19-0x0000000000250000-0x0000000000268000-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"	4b733b1ce688db9ffc76d70ccd703af868d654f8f0dd48a047efa8f4d4a2e999.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	4b733b1ce688db9ffc76d70ccd703af868d654f8f0dd48a047efa8f4d4a2e999.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1720	4b733b1ce688db9ffc76d70ccd703af868d654f8f0dd48a047efa8f4d4a2e999.exe
Token: SeDebugPrivilege	2976	CTS.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1720 wrote to memory of 2384	1720	4b733b1ce688db9ffc76d70ccd703af868d654f8f0dd48a047efa8f4d4a2e999.exe	28
PID 1720 wrote to memory of 2384	1720	4b733b1ce688db9ffc76d70ccd703af868d654f8f0dd48a047efa8f4d4a2e999.exe	28
PID 1720 wrote to memory of 2384	1720	4b733b1ce688db9ffc76d70ccd703af868d654f8f0dd48a047efa8f4d4a2e999.exe	28
PID 1720 wrote to memory of 2384	1720	4b733b1ce688db9ffc76d70ccd703af868d654f8f0dd48a047efa8f4d4a2e999.exe	28
PID 1720 wrote to memory of 2976	1720	4b733b1ce688db9ffc76d70ccd703af868d654f8f0dd48a047efa8f4d4a2e999.exe	29
PID 1720 wrote to memory of 2976	1720	4b733b1ce688db9ffc76d70ccd703af868d654f8f0dd48a047efa8f4d4a2e999.exe	29
PID 1720 wrote to memory of 2976	1720	4b733b1ce688db9ffc76d70ccd703af868d654f8f0dd48a047efa8f4d4a2e999.exe	29
PID 1720 wrote to memory of 2976	1720	4b733b1ce688db9ffc76d70ccd703af868d654f8f0dd48a047efa8f4d4a2e999.exe	29

C:\Users\Admin\AppData\Local\Temp\4b733b1ce688db9ffc76d70ccd703af868d654f8f0dd48a047efa8f4d4a2e999.exe
"C:\Users\Admin\AppData\Local\Temp\4b733b1ce688db9ffc76d70ccd703af868d654f8f0dd48a047efa8f4d4a2e999.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1720
- C:\Users\Admin\AppData\Local\Temp\l18w8uRoI8rfuMn.exe
  C:\Users\Admin\AppData\Local\Temp\l18w8uRoI8rfuMn.exe
  2⤵
  - Executes dropped EXE
  PID:2384
- 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:2976

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\CTS.exe

Filesize
27KB

MD5
a6749b968461644db5cc0ecceffb224a

SHA1
2795aa37b8586986a34437081351cdd791749a90

SHA256
720023737d7ff700818f55612ba069a609a5ddea646bb3509b615ee3523a4ca2

SHA512
2a276816290746ed914af9cf6427aef31ce9395b8e9937090e329a8f74fb84c62d15b196e13346caa086842b3f5f549b9eb20cbf422d18c9c1b63e6342ea90b4

Download Submit
\Users\Admin\AppData\Local\Temp\l18w8uRoI8rfuMn.exe

Filesize
64KB

MD5
e97c622b03fb2a2598bf019fbbe29f2c

SHA1
32698bd1d3a0ff6cf441770d1b2b816285068d19

SHA256
5c1af46c7300e87a73dacf6cf41ce397e3f05df6bd9c7e227b4ac59f85769160

SHA512
db70c62fb35a8e5b005f13b57c1ebbf6c465f6ff0524422294c43e27fb4aa79379dc1e300ad11dc2354405c43b192ae06b91c0f525a1f2617e4d14673651a87d

Download Submit
memory/1720-0-0x0000000000100000-0x0000000000118000-memory.dmp

Filesize
96KB

Download
memory/1720-15-0x00000000000B0000-0x00000000000C8000-memory.dmp

Filesize
96KB

Download
memory/1720-18-0x00000000000B0000-0x00000000000C8000-memory.dmp

Filesize
96KB

Download
memory/1720-14-0x0000000000100000-0x0000000000118000-memory.dmp

Filesize
96KB

Download
memory/1720-26-0x00000000000B0000-0x00000000000C8000-memory.dmp

Filesize
96KB

Download
memory/2976-19-0x0000000000250000-0x0000000000268000-memory.dmp

Filesize
96KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads