28a537f32308bc36717340d7844e41a7343500f77a44a00556eac553b6110e2b

Analysis

max time kernel
153s
max time network
160s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
08/03/2024, 12:54

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General

Target

bb4fc5f64c6b680c99e385a031dcfcc2.exe
Size

30KB
MD5

bb4fc5f64c6b680c99e385a031dcfcc2
SHA1

4431346903ba8d27e40c1a812bfbe493f7f06d56
SHA256

28a537f32308bc36717340d7844e41a7343500f77a44a00556eac553b6110e2b
SHA512

9e54965da6b96b59da4bbc870048dacd4bba54384a23dc852457df743990b89b07a1f17d8afe2a945756577df337b331c40ba08005c54bb11e017f63d69e7c52
SSDEEP

768:XocAX3LKew369lp2z3Sd4baFXLjwP/Tgj93b8NIocVSEFxf:SKcR4mjD9r823F5

Score

7^/10

persistence spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4076	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 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4924-0-0x00000000002A0000-0x00000000002B7000-memory.dmp	upx
behavioral2/files/0x000700000002324f-6.dat	upx
behavioral2/memory/4076-9-0x0000000000300000-0x0000000000317000-memory.dmp	upx
behavioral2/memory/4924-7-0x00000000002A0000-0x00000000002B7000-memory.dmp	upx
behavioral2/files/0x00070000000224f9-12.dat	upx
behavioral2/files/0x0008000000023244-30.dat	upx
behavioral2/memory/4076-33-0x0000000000300000-0x0000000000317000-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"	bb4fc5f64c6b680c99e385a031dcfcc2.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	CTS.exe
File created	C:\Windows\CTS.exe	bb4fc5f64c6b680c99e385a031dcfcc2.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4924	bb4fc5f64c6b680c99e385a031dcfcc2.exe
Token: SeDebugPrivilege	4076	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4924 wrote to memory of 4076	4924	bb4fc5f64c6b680c99e385a031dcfcc2.exe	98
PID 4924 wrote to memory of 4076	4924	bb4fc5f64c6b680c99e385a031dcfcc2.exe	98
PID 4924 wrote to memory of 4076	4924	bb4fc5f64c6b680c99e385a031dcfcc2.exe	98

C:\Users\Admin\AppData\Local\Temp\bb4fc5f64c6b680c99e385a031dcfcc2.exe
"C:\Users\Admin\AppData\Local\Temp\bb4fc5f64c6b680c99e385a031dcfcc2.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4924
- 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:4076

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=4832 --field-trial-handle=2244,i,11878111470816612087,2265290141962607370,262144 --variations-seed-version /prefetch:8
1⤵
PID:5116

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
747KB

MD5
d4514bdda9bb39dba0c9f04c75625f2b

SHA1
1e277c314cad5ba0c3432ba8bd8179bcb8b79452

SHA256
c2a86db2d94ab69ff6b3b800a87d462e812865be0dfdd6d5d39c03b8d892f205

SHA512
ccae57022cc6994fa47130f26cfffbbd150526205b6fc0b74d59f28b5a504ad72ab3f85ba88ec44dba5714b7f23845976bd96d92177d0d0cb1d64881668afc35

Download Submit
C:\Users\Admin\AppData\Local\Temp\ZSGpBDV5vmbiim6.exe

Filesize
30KB

MD5
d69fccd360b7fc53038c994426eb488e

SHA1
285280518c1d2101e1682a341cf8f3d7a0278f74

SHA256
cec1dc6b99ff37228c40042effc1f227ca50608ba8932c2e65115374109b6093

SHA512
f705c6fef06e67295bc5639c6f97d0e6c3d11603b5fc8150593a2fecb4571c20a4c4021afb931b3873ec156668dc0781432aa085c233169e9fd612c0efd35fc6

Download Submit
C:\Windows\CTS.exe

Filesize
29KB

MD5
70aa23c9229741a9b52e5ce388a883ac

SHA1
b42683e21e13de3f71db26635954d992ebe7119e

SHA256
9d25cc704b1c00c9d17903e25ca35c319663e997cb9da0b116790b639e9688f2

SHA512
be604a2ad5ab8a3e5edb8901016a76042ba873c8d05b4ef8eec31241377ec6b2a883b51c6912dc7640581ffa624547db334683975883ae74e62808b5ae9ab0b5

Download Submit
memory/4076-9-0x0000000000300000-0x0000000000317000-memory.dmp

Filesize
92KB

Download
memory/4076-33-0x0000000000300000-0x0000000000317000-memory.dmp

Filesize
92KB

Download
memory/4924-0-0x00000000002A0000-0x00000000002B7000-memory.dmp

Filesize
92KB

Download
memory/4924-7-0x00000000002A0000-0x00000000002B7000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads