52b1196caaf09ae059ad90da293552299c414c666df6d058f06e088db8775f6e

General

Target

33e826176ff4e48466375ffa5c9ecf85.exe
Size

85KB
MD5

33e826176ff4e48466375ffa5c9ecf85
SHA1

7f8e2aee8e179e8ac1967c58019951a687474951
SHA256

52b1196caaf09ae059ad90da293552299c414c666df6d058f06e088db8775f6e
SHA512

5a7c5e84e860d72e19b8c84285b3e9242476117cd498510965ae7a7a6def9a8aac72ec2af01d97db3fddf7622e2ea364b288ed0cd1c1a24b7c460759ba5c3450
SSDEEP

1536:SKcR4mjD9r823FSBLrfbKjCX43ZsY+bpmf3Z:SKcWmjRrz3b8sZsbbpmf3Z

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
1432	rMvwwn25hU88qY6.exe
4852	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 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/960-0-0x0000000000F10000-0x0000000000F27000-memory.dmp	upx
behavioral2/files/0x0007000000023204-6.dat	upx
behavioral2/memory/4852-8-0x0000000000250000-0x0000000000267000-memory.dmp	upx
behavioral2/memory/960-9-0x0000000000F10000-0x0000000000F27000-memory.dmp	upx
behavioral2/files/0x000500000002270a-13.dat	upx
behavioral2/memory/4852-38-0x0000000000250000-0x0000000000267000-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"	33e826176ff4e48466375ffa5c9ecf85.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	33e826176ff4e48466375ffa5c9ecf85.exe
File created	C:\Windows\CTS.exe	CTS.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	960	33e826176ff4e48466375ffa5c9ecf85.exe
Token: SeDebugPrivilege	4852	CTS.exe
Token: SeBackupPrivilege	216	dw20.exe
Token: SeBackupPrivilege	216	dw20.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 960 wrote to memory of 1432	960	33e826176ff4e48466375ffa5c9ecf85.exe	88
PID 960 wrote to memory of 1432	960	33e826176ff4e48466375ffa5c9ecf85.exe	88
PID 960 wrote to memory of 4852	960	33e826176ff4e48466375ffa5c9ecf85.exe	90
PID 960 wrote to memory of 4852	960	33e826176ff4e48466375ffa5c9ecf85.exe	90
PID 960 wrote to memory of 4852	960	33e826176ff4e48466375ffa5c9ecf85.exe	90
PID 1432 wrote to memory of 216	1432	rMvwwn25hU88qY6.exe	94
PID 1432 wrote to memory of 216	1432	rMvwwn25hU88qY6.exe	94

C:\Users\Admin\AppData\Local\Temp\33e826176ff4e48466375ffa5c9ecf85.exe
"C:\Users\Admin\AppData\Local\Temp\33e826176ff4e48466375ffa5c9ecf85.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:960
- C:\Users\Admin\AppData\Local\Temp\rMvwwn25hU88qY6.exe
  C:\Users\Admin\AppData\Local\Temp\rMvwwn25hU88qY6.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:1432
- - 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:216
- 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:4852

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

1

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
352KB

MD5
8970dea112323ba6494e6f788950f0e6

SHA1
8365f407b46f919506ac31b555d1daf788fce2c6

SHA256
9610f5281b68fd74fc99b3d4063ebd5d8054223d9a93c1c95b5f29e90c5b94bd

SHA512
4513898231040ffbd691fcfc771c468c65951339897c770c7797535af706aae8141484f14d4165efc7145d55049a0cb49971df559d4d7e7ab0ac7b800089603b

Download Submit
C:\Users\Admin\AppData\Local\Temp\rMvwwn25hU88qY6.exe

Filesize
56KB

MD5
e115521ba14b75f53dcdff087ec6898f

SHA1
87103a892bb514a93d485fba221bacb9da3aae25

SHA256
59b284d0ad4c2634938e70fae67d9048bd98422d052fbd745a9b80b5fae7ae29

SHA512
ab3d097bcf11bf7327a28124052b210f5fb13b9bfb9b7376cae1ba5c30182a330506935288a7fe06b7e3fdd82b57f5c31638f1c301738342819c772b346fa35a

Download Submit
C:\Windows\CTS.exe

Filesize
29KB

MD5
70aa23c9229741a9b52e5ce388a883ac

SHA1
b42683e21e13de3f71db26635954d992ebe7119e

SHA256
9d25cc704b1c00c9d17903e25ca35c319663e997cb9da0b116790b639e9688f2

SHA512
be604a2ad5ab8a3e5edb8901016a76042ba873c8d05b4ef8eec31241377ec6b2a883b51c6912dc7640581ffa624547db334683975883ae74e62808b5ae9ab0b5

Download Submit
memory/960-0-0x0000000000F10000-0x0000000000F27000-memory.dmp

Filesize
92KB

Download
memory/960-9-0x0000000000F10000-0x0000000000F27000-memory.dmp

Filesize
92KB

Download
memory/1432-27-0x00007FFE07920000-0x00007FFE082C1000-memory.dmp

Filesize
9.6MB

Download
memory/1432-30-0x00007FFE07920000-0x00007FFE082C1000-memory.dmp

Filesize
9.6MB

Download
memory/1432-31-0x0000000000EF0000-0x0000000000F00000-memory.dmp

Filesize
64KB

Download
memory/1432-41-0x00007FFE07920000-0x00007FFE082C1000-memory.dmp

Filesize
9.6MB

Download
memory/4852-8-0x0000000000250000-0x0000000000267000-memory.dmp

Filesize
92KB

Download
memory/4852-38-0x0000000000250000-0x0000000000267000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads