cc05330fb1cffd1be976d70d9b6ace24a8d7f33e6747b42d0b8abed88e76c406

Analysis

max time kernel
151s
max time network
157s
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, 12:30

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General

Target
b7680838a7990dd89275d50c1a0eb27d.exe
Size 115KB
Sample240306-pprkfabh63
SHA256 cc05330fb1cffd1be976d70d9b6ace24a8d7f33e6747b42d0b8abed88e76c406
MD5 b7680838a7990dd89275d50c1a0eb27d
SHA1 bd8f61c45382101a7951c2e22c19349e64a7217f
SHA512 a6bab7d6b3806bc54725c7ee28d928ecc1e9b595e7aeb82e9ed1972a8d526cac1fe858c849165dbeb836e9225580546916a52d199dda68e55bb77f647cf3d433
SSDEEP 3072:SKcWmjRrz3ZKcWmjRrz3GF2kDOTY6FrFwgflUVh5+:hGyGtkDOVflUx+
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

persistence spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
4740	iNNqvzgyatNFns5.exe
2868	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/4524-0-0x0000000000750000-0x0000000000767000-memory.dmp	upx
behavioral2/files/0x0007000000023215-8.dat	upx
behavioral2/memory/4524-7-0x0000000000750000-0x0000000000767000-memory.dmp	upx
behavioral2/memory/2868-9-0x00000000003B0000-0x00000000003C7000-memory.dmp	upx
behavioral2/files/0x000200000002279d-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"	b7680838a7990dd89275d50c1a0eb27d.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	b7680838a7990dd89275d50c1a0eb27d.exe

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	dw20.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	dw20.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	4524	b7680838a7990dd89275d50c1a0eb27d.exe
Token: SeDebugPrivilege	2868	CTS.exe
Token: SeBackupPrivilege	1312	dw20.exe
Token: SeBackupPrivilege	1312	dw20.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 4524 wrote to memory of 4740	4524	b7680838a7990dd89275d50c1a0eb27d.exe	90
PID 4524 wrote to memory of 4740	4524	b7680838a7990dd89275d50c1a0eb27d.exe	90
PID 4524 wrote to memory of 2868	4524	b7680838a7990dd89275d50c1a0eb27d.exe	92
PID 4524 wrote to memory of 2868	4524	b7680838a7990dd89275d50c1a0eb27d.exe	92
PID 4524 wrote to memory of 2868	4524	b7680838a7990dd89275d50c1a0eb27d.exe	92
PID 4740 wrote to memory of 1312	4740	iNNqvzgyatNFns5.exe	95
PID 4740 wrote to memory of 1312	4740	iNNqvzgyatNFns5.exe	95

C:\Users\Admin\AppData\Local\Temp\b7680838a7990dd89275d50c1a0eb27d.exe
"C:\Users\Admin\AppData\Local\Temp\b7680838a7990dd89275d50c1a0eb27d.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4524
- C:\Users\Admin\AppData\Local\Temp\iNNqvzgyatNFns5.exe
  C:\Users\Admin\AppData\Local\Temp\iNNqvzgyatNFns5.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:4740
- - C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe
    dw20.exe -x -s 812
    3⤵
    - Checks processor information in registry
    - Enumerates system info in registry
    - Suspicious use of AdjustPrivilegeToken
    PID:1312
- 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:2868

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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

excel.exe_Rules.xml

Path C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml
Size 382KB
SHA256 bec45e5241ac6d743c4944cd110769fa88d45bd6c16fc0ae07d1a17f685729e7
MD5 b46497455a1763484ba1aaecdb7b2e95
SHA1 52437b9f9b70a50bd07d638b73e7f7b7671b0b2c
SHA512 ca2a65883a2d2f17cbf5a2048707aa05050b8e1f38a5fa1f1b5e704f7a416790477a347c9ade780cfb5027f44b24c48f530563bdef9f0551d099dbb74af61356
SSDEEP 6144:hGyGSEOsv1FU6P0n4iH7IRXHvzFNolBrkxqEjRTdZN6UifAMmNNC9MXYT:h3MTtKgYjbkXHvzFWlGxqEjBdZNEAMFL
MD5 SHA1 SHA512 SSDEEP

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iNNqvzgyatNFns5.exe

Path C:\Users\Admin\AppData\Local\Temp\iNNqvzgyatNFns5.exe
Size 56KB
SHA256 59b284d0ad4c2634938e70fae67d9048bd98422d052fbd745a9b80b5fae7ae29
MD5 e115521ba14b75f53dcdff087ec6898f
SHA1 87103a892bb514a93d485fba221bacb9da3aae25
SHA512 ab3d097bcf11bf7327a28124052b210f5fb13b9bfb9b7376cae1ba5c30182a330506935288a7fe06b7e3fdd82b57f5c31638f1c301738342819c772b346fa35a
SSDEEP 768:y+pd03sizr5lRxEvOSEfZsgZoFOZwM6rs4K7rM:hpCDr5ZCOxHoFOZwhrsr7rM
MD5 SHA1 SHA512 SSDEEP

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CTS.exe

Path C:\Windows\CTS.exe
Size 59KB
SHA256 6028434636f349d801465f77af3a1e387a9c5032942ca6cadb6506d0800f2a74
MD5 5efd390d5f95c8191f5ac33c4db4b143
SHA1 42d81b118815361daa3007f1a40f1576e9a9e0bc
SHA512 720fbe253483dc034307a57a2860c8629a760f883603198d1213f5290b7f236bf0f5f237728ebed50962be83dc7dc4abe61a1e9a55218778495fc6580eb20b3d
SSDEEP 768:XocAX3LKew369lp2z3Sd4baFXLjwP/Tgj93b8NIocVSEFGocAX3LKew369lp2z3:SKcR4mjD9r823FHKcR4mjD9r823F
MD5 SHA1 SHA512 SSDEEP

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memory/2868-9-0x00000000003B0000-0x00000000003C7000-memory.dmp

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memory/4524-0-0x0000000000750000-0x0000000000767000-memory.dmp

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memory/4524-7-0x0000000000750000-0x0000000000767000-memory.dmp

Download

memory/4740-27-0x00007FFD01840000-0x00007FFD021E1000-memory.dmp

Download

memory/4740-30-0x00007FFD01840000-0x00007FFD021E1000-memory.dmp

Download

memory/4740-31-0x0000000000C10000-0x0000000000C20000-memory.dmp

Download

memory/4740-39-0x00007FFD01840000-0x00007FFD021E1000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads