8bbe03f0a57a2ddba3a711e4a17473722a2ff754bd0378d60b23190b4bdb6943

Analysis

max time kernel
156s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
26/12/2023, 08:47

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General

Target

61034de4b3639c270db80df12390faaa.exe
Size

126KB
MD5

61034de4b3639c270db80df12390faaa
SHA1

aa9a96e91f531326c2260ad7c7531d0e1a37c5ba
SHA256

8bbe03f0a57a2ddba3a711e4a17473722a2ff754bd0378d60b23190b4bdb6943
SHA512

69ea2d5a1a43fe46c01286c451f7314086bdd5750d2a699226adaae475520547ba885ae1b69cd664cccfa931bb7b1e949816dd646c1b846123e16b4a2f6e74ed
SSDEEP

3072:SKcWmjRrz3ZKcWmjRrz3PtupvLaPGKxyFq7z:hGyGPtupvLyMFI

Score

7^/10

persistence spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
3108	YjHxpzbv7MkVcpI.exe
3612	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 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1588-0-0x00000000004C0000-0x00000000004D7000-memory.dmp	upx
behavioral2/files/0x000200000001e7e1-7.dat	upx
behavioral2/memory/1588-8-0x00000000004C0000-0x00000000004D7000-memory.dmp	upx
behavioral2/memory/3612-11-0x0000000000D50000-0x0000000000D67000-memory.dmp	upx
behavioral2/files/0x0007000000022556-14.dat	upx
behavioral2/memory/3612-22-0x0000000000D50000-0x0000000000D67000-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"	61034de4b3639c270db80df12390faaa.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	61034de4b3639c270db80df12390faaa.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1588	61034de4b3639c270db80df12390faaa.exe
Token: SeDebugPrivilege	3612	CTS.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1588 wrote to memory of 3108	1588	61034de4b3639c270db80df12390faaa.exe	92
PID 1588 wrote to memory of 3108	1588	61034de4b3639c270db80df12390faaa.exe	92
PID 1588 wrote to memory of 3108	1588	61034de4b3639c270db80df12390faaa.exe	92
PID 1588 wrote to memory of 3612	1588	61034de4b3639c270db80df12390faaa.exe	94
PID 1588 wrote to memory of 3612	1588	61034de4b3639c270db80df12390faaa.exe	94
PID 1588 wrote to memory of 3612	1588	61034de4b3639c270db80df12390faaa.exe	94

C:\Users\Admin\AppData\Local\Temp\61034de4b3639c270db80df12390faaa.exe
"C:\Users\Admin\AppData\Local\Temp\61034de4b3639c270db80df12390faaa.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1588
- C:\Users\Admin\AppData\Local\Temp\YjHxpzbv7MkVcpI.exe
  C:\Users\Admin\AppData\Local\Temp\YjHxpzbv7MkVcpI.exe
  2⤵
  - Executes dropped EXE
  PID:3108
- 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:3612

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
382KB

MD5
9b309a1cdc914caec10b37020d9f1f20

SHA1
5b630504561711aa836abd8e011c4fbf4079efd5

SHA256
aa0f86a5bda04276a16a5ee6fe1831ad85394237fff380df7e767a8dc47cddc4

SHA512
0043faf455ee667e41bc30d6d4eb0f786dc382610e8fd578d83a3dff97c282dabe072f1ba13446862631fa51e634703c4d91966c2f9656798e5cd86749bd7147

Download Submit
C:\Users\Admin\AppData\Local\Temp\YjHxpzbv7MkVcpI.exe

Filesize
67KB

MD5
50e9d1438f14e3e345db6b9f15473be0

SHA1
20b511d23f4df169b10d6cd022e90b3441af038a

SHA256
6852f4faa2d0ae8be06c198c40875c9ecc466c2da9f6899b6d1f80e7df80b5e9

SHA512
65dcd5c3ee197727beef8c5bfef4073d9ed93c6662827721310dcbc0ea02c8334dbe42a47a2aee1cbe35a2943d6518c93a1d77325e58ad74cb93828b6c691ea9

Download Submit
C:\Windows\CTS.exe

Filesize
59KB

MD5
5efd390d5f95c8191f5ac33c4db4b143

SHA1
42d81b118815361daa3007f1a40f1576e9a9e0bc

SHA256
6028434636f349d801465f77af3a1e387a9c5032942ca6cadb6506d0800f2a74

SHA512
720fbe253483dc034307a57a2860c8629a760f883603198d1213f5290b7f236bf0f5f237728ebed50962be83dc7dc4abe61a1e9a55218778495fc6580eb20b3d

Download Submit
memory/1588-0-0x00000000004C0000-0x00000000004D7000-memory.dmp

Filesize
92KB

Download
memory/1588-8-0x00000000004C0000-0x00000000004D7000-memory.dmp

Filesize
92KB

Download
memory/3612-11-0x0000000000D50000-0x0000000000D67000-memory.dmp

Filesize
92KB

Download
memory/3612-22-0x0000000000D50000-0x0000000000D67000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads