0710a15fe0b38f9786531c1196e57689038bdd24298377c5180c5783da65470a

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
06-03-2024 08:08

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General

Target

b6efeb17d03830ba0a5b3e1fe6e3a5f2.exe
Size

75KB
MD5

b6efeb17d03830ba0a5b3e1fe6e3a5f2
SHA1

cec99cfaed0e87f2c8e7363b26e7579c99864493
SHA256

0710a15fe0b38f9786531c1196e57689038bdd24298377c5180c5783da65470a
SHA512

af51b30f0abb156e2a8b14a9a720164c4e7daf8ec8a13e7203ef7ecde49506c1447ae0d6894d34abb90612688e7a12acd9f2008492af6eceb06559d8d9c9acb2
SSDEEP

1536:SKcR4mjD9r823FHKcR4mjD9r823FOYqUKxrUHARH:SKcWmjRrz3ZKcWmjRrz30naHAl

Score

7^/10

persistence spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
4008	5vCZPWEN8SniVWK.exe
4360	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/1004-0-0x0000000000670000-0x0000000000687000-memory.dmp	upx
behavioral2/files/0x0008000000023288-6.dat	upx
behavioral2/memory/4360-9-0x00000000002E0000-0x00000000002F7000-memory.dmp	upx
behavioral2/memory/1004-8-0x0000000000670000-0x0000000000687000-memory.dmp	upx
behavioral2/files/0x00070000000224f9-13.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"	b6efeb17d03830ba0a5b3e1fe6e3a5f2.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	b6efeb17d03830ba0a5b3e1fe6e3a5f2.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1004	b6efeb17d03830ba0a5b3e1fe6e3a5f2.exe
Token: SeDebugPrivilege	4360	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1004 wrote to memory of 4008	1004	b6efeb17d03830ba0a5b3e1fe6e3a5f2.exe	96
PID 1004 wrote to memory of 4008	1004	b6efeb17d03830ba0a5b3e1fe6e3a5f2.exe	96
PID 1004 wrote to memory of 4360	1004	b6efeb17d03830ba0a5b3e1fe6e3a5f2.exe	98
PID 1004 wrote to memory of 4360	1004	b6efeb17d03830ba0a5b3e1fe6e3a5f2.exe	98
PID 1004 wrote to memory of 4360	1004	b6efeb17d03830ba0a5b3e1fe6e3a5f2.exe	98

C:\Users\Admin\AppData\Local\Temp\b6efeb17d03830ba0a5b3e1fe6e3a5f2.exe
"C:\Users\Admin\AppData\Local\Temp\b6efeb17d03830ba0a5b3e1fe6e3a5f2.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1004
- C:\Users\Admin\AppData\Local\Temp\5vCZPWEN8SniVWK.exe
  C:\Users\Admin\AppData\Local\Temp\5vCZPWEN8SniVWK.exe
  2⤵
  - Executes dropped EXE
  PID:4008
- 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:4360

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3856 --field-trial-handle=3240,i,13319578961094268484,16557498665191861597,262144 --variations-seed-version /prefetch:8
1⤵
PID:5084

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
777KB

MD5
2f5e77bf44f27f99912f415d5e92c054

SHA1
1e6f5ef28ce1424e4ac87909678b5e460f0254db

SHA256
89564f5b45d98eb423ff462941b8214ef314ae80f473189e677d29801b00f47e

SHA512
36334fbd226b4b92abea4ab73727a5b9136166add775c30475962e3a527d38705052f299f2153f23d52c03ed3b4e9f864062ccf7ad105c5e33550f70a919d5ed

Download Submit
C:\Users\Admin\AppData\Local\Temp\5vCZPWEN8SniVWK.exe

Filesize
16KB

MD5
95c9a037d3b01a21275aa6cc73b122a2

SHA1
c19ed8afc95b91d0cc6bc075047de30eae015386

SHA256
1d5edcbae3258efb07cc57ba8d7cd1ebe2eb5106ef1a894b787ed2857952c523

SHA512
761bb76261712a597f610e3162fa1514d2f56d69d03d1b76b51c6b2a7b0c88bbd385b7dc849c6913f7d861fb3aed8551f26f640d90b621e8629abe2e4bfb6160

Download Submit
C:\Windows\CTS.exe

Filesize
59KB

MD5
5efd390d5f95c8191f5ac33c4db4b143

SHA1
42d81b118815361daa3007f1a40f1576e9a9e0bc

SHA256
6028434636f349d801465f77af3a1e387a9c5032942ca6cadb6506d0800f2a74

SHA512
720fbe253483dc034307a57a2860c8629a760f883603198d1213f5290b7f236bf0f5f237728ebed50962be83dc7dc4abe61a1e9a55218778495fc6580eb20b3d

Download Submit
memory/1004-0-0x0000000000670000-0x0000000000687000-memory.dmp

Filesize
92KB

Download
memory/1004-8-0x0000000000670000-0x0000000000687000-memory.dmp

Filesize
92KB

Download
memory/4360-9-0x00000000002E0000-0x00000000002F7000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads