b7495341064e1d2663e017d036a370ad7cf5e9062943204801881077e78cf098

Analysis

max time kernel
161s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
07/03/2024, 16:18

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General

Target

b91f97264b360b66322d6cf94e31ce2b.exe
Size

75KB
MD5

b91f97264b360b66322d6cf94e31ce2b
SHA1

b9b82cfec865be27d451d1bb7e62d9e4d3d914fc
SHA256

b7495341064e1d2663e017d036a370ad7cf5e9062943204801881077e78cf098
SHA512

278bc640b010e70cd7e67f83fb94f3794deb80538f31d3d673154958850cb18ce0f9b661dfd5a945f951c6ee5c1b7eabf021b9b7eb27467f3befcfda34692ba7
SSDEEP

1536:SKcR4mjD9r823FHKcR4mjD9r823FZ1X9ct/DQ:SKcWmjRrz3ZKcWmjRrz3lSDQ

Score

7^/10

persistence spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
920	G1r9YISUkzHLHXk.exe
4532	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/3864-0-0x0000000000E50000-0x0000000000E67000-memory.dmp	upx
behavioral2/files/0x0007000000023239-6.dat	upx
behavioral2/memory/3864-7-0x0000000000E50000-0x0000000000E67000-memory.dmp	upx
behavioral2/memory/4532-9-0x0000000000040000-0x0000000000057000-memory.dmp	upx
behavioral2/files/0x00040000000227f2-13.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"	b91f97264b360b66322d6cf94e31ce2b.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	b91f97264b360b66322d6cf94e31ce2b.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3864	b91f97264b360b66322d6cf94e31ce2b.exe
Token: SeDebugPrivilege	4532	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 3864 wrote to memory of 920	3864	b91f97264b360b66322d6cf94e31ce2b.exe	90
PID 3864 wrote to memory of 920	3864	b91f97264b360b66322d6cf94e31ce2b.exe	90
PID 3864 wrote to memory of 4532	3864	b91f97264b360b66322d6cf94e31ce2b.exe	93
PID 3864 wrote to memory of 4532	3864	b91f97264b360b66322d6cf94e31ce2b.exe	93
PID 3864 wrote to memory of 4532	3864	b91f97264b360b66322d6cf94e31ce2b.exe	93

C:\Users\Admin\AppData\Local\Temp\b91f97264b360b66322d6cf94e31ce2b.exe
"C:\Users\Admin\AppData\Local\Temp\b91f97264b360b66322d6cf94e31ce2b.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3864
- C:\Users\Admin\AppData\Local\Temp\G1r9YISUkzHLHXk.exe
  C:\Users\Admin\AppData\Local\Temp\G1r9YISUkzHLHXk.exe
  2⤵
  - Executes dropped EXE
  PID:920
- 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:4532

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
380KB

MD5
2d0fcb0f6a7e2edcbc94946b45738527

SHA1
a722bc74e9f01b743001366b86ad8686f2f43ac1

SHA256
a99c2af0f2e95c0595ec7f5e163e4dca0e17ccd263a5834d24f0a719cd8c3b91

SHA512
d7b56e1742a666a92056232785df2b37ed7b18817a8ee6545e1e82c0f3ecb0a014cefc75783321e8836469ea8c7492f1fedd0109ecdcd33189ccb00c361703e5

Download Submit
C:\Users\Admin\AppData\Local\Temp\G1r9YISUkzHLHXk.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/3864-0-0x0000000000E50000-0x0000000000E67000-memory.dmp

Filesize
92KB

Download
memory/3864-7-0x0000000000E50000-0x0000000000E67000-memory.dmp

Filesize
92KB

Download
memory/4532-9-0x0000000000040000-0x0000000000057000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads