f4459fc0239171fee98f5b71e59789fe8ab891ce27d498b7091379675602d82b

Analysis

max time kernel
205s
max time network
225s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
30/12/2023, 22:50

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General

Target

1efed35e2cba3eb1262590e2ebdb424d.exe
Size

30KB
MD5

1efed35e2cba3eb1262590e2ebdb424d
SHA1

8f0eaac35237653a34d32b25f46388c2a4fb71ec
SHA256

f4459fc0239171fee98f5b71e59789fe8ab891ce27d498b7091379675602d82b
SHA512

dc9eeece793f1e5c555eb42bf136e38a12d2703bef2fb95a9e0b750902c1c9f9a236bd71f216b35c0b1d86ab9e49ed60f1ed0e4191ed0cdb73399944b8d0f3e2
SSDEEP

768:XocAX3LKew369lp2z3Sd4baFXLjwP/Tgj93b8NIocVSEFPO:SKcR4mjD9r823FPO

Score

7^/10

persistence spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4336	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/3460-0-0x0000000000730000-0x0000000000747000-memory.dmp	upx
behavioral2/memory/3460-3-0x0000000000730000-0x0000000000747000-memory.dmp	upx
behavioral2/memory/3460-8-0x0000000000730000-0x0000000000747000-memory.dmp	upx
behavioral2/files/0x0006000000023213-11.dat	upx
behavioral2/memory/4336-10-0x0000000000290000-0x00000000002A7000-memory.dmp	upx
behavioral2/files/0x0003000000022707-14.dat	upx
behavioral2/memory/4336-15-0x0000000000290000-0x00000000002A7000-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"	1efed35e2cba3eb1262590e2ebdb424d.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	1efed35e2cba3eb1262590e2ebdb424d.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3460	1efed35e2cba3eb1262590e2ebdb424d.exe
Token: SeDebugPrivilege	4336	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3460 wrote to memory of 4336	3460	1efed35e2cba3eb1262590e2ebdb424d.exe	92
PID 3460 wrote to memory of 4336	3460	1efed35e2cba3eb1262590e2ebdb424d.exe	92
PID 3460 wrote to memory of 4336	3460	1efed35e2cba3eb1262590e2ebdb424d.exe	92

C:\Users\Admin\AppData\Local\Temp\1efed35e2cba3eb1262590e2ebdb424d.exe
"C:\Users\Admin\AppData\Local\Temp\1efed35e2cba3eb1262590e2ebdb424d.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3460
- 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:4336

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml

Filesize
352KB

MD5
4b8f972f1ed31791441e491a8ed4126a

SHA1
27f61c538a6142c6930a11fdab5928bc9e57b7d9

SHA256
9e2c02a7f22ffc9f12c712aeb54230a778d0eaf94e46451cf90759a8a7f83823

SHA512
8a5d6dec15da186ad257120111aaef54bd7d8c3979a586b947e990db061af3267f3f6eac638a615a6923654159706780ca83f0baa9a3eb4ba48faeec9b731753

Download Submit
C:\Windows\CTS.exe

Filesize
29KB

MD5
70aa23c9229741a9b52e5ce388a883ac

SHA1
b42683e21e13de3f71db26635954d992ebe7119e

SHA256
9d25cc704b1c00c9d17903e25ca35c319663e997cb9da0b116790b639e9688f2

SHA512
be604a2ad5ab8a3e5edb8901016a76042ba873c8d05b4ef8eec31241377ec6b2a883b51c6912dc7640581ffa624547db334683975883ae74e62808b5ae9ab0b5

Download Submit
memory/3460-0-0x0000000000730000-0x0000000000747000-memory.dmp

Filesize
92KB

Download
memory/3460-3-0x0000000000730000-0x0000000000747000-memory.dmp

Filesize
92KB

Download
memory/3460-8-0x0000000000730000-0x0000000000747000-memory.dmp

Filesize
92KB

Download
memory/4336-10-0x0000000000290000-0x00000000002A7000-memory.dmp

Filesize
92KB

Download
memory/4336-15-0x0000000000290000-0x00000000002A7000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads