c79979c67ec4b3318e16cc6fed8015dd9a51cef8ecd9210c6e68e66df3c6868b

General

Target

573ffa96a1eef92c16afe4abb49eba66.exe
Size

85KB
MD5

573ffa96a1eef92c16afe4abb49eba66
SHA1

22a1786eea9b288b700f2d06ee81f3c1f7752a0e
SHA256

c79979c67ec4b3318e16cc6fed8015dd9a51cef8ecd9210c6e68e66df3c6868b
SHA512

bc9f87aa028ca5d0590c164b05ae5e5f921edad7122d9ea1e9a6048f95a92ce2268bbeed906b07594d40a2e9431d6e32b1f49f439d1b66ab9f23e6ad7a040878
SSDEEP

1536:SKcR4mjD9r823FwUWQtgyeHwVmW2CNbjcuBEJsJUmFlN+Qo0/:SKcWmjRrz3GUWQtLGwp2svcuuSJ3UL0/

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
940	RZEpLh0UP8cGOLp.exe
1244	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/4832-0-0x0000000000760000-0x0000000000777000-memory.dmp	upx
behavioral2/files/0x000700000002321b-6.dat	upx
behavioral2/memory/4832-7-0x0000000000760000-0x0000000000777000-memory.dmp	upx
behavioral2/memory/1244-8-0x0000000000940000-0x0000000000957000-memory.dmp	upx
behavioral2/files/0x000900000001e7e2-13.dat	upx
behavioral2/memory/1244-43-0x0000000000940000-0x0000000000957000-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"	CTS.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	573ffa96a1eef92c16afe4abb49eba66.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	573ffa96a1eef92c16afe4abb49eba66.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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	dw20.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	dw20.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	4832	573ffa96a1eef92c16afe4abb49eba66.exe
Token: SeDebugPrivilege	1244	CTS.exe
Token: SeBackupPrivilege	4280	dw20.exe
Token: SeBackupPrivilege	4280	dw20.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 4832 wrote to memory of 940	4832	573ffa96a1eef92c16afe4abb49eba66.exe	89
PID 4832 wrote to memory of 940	4832	573ffa96a1eef92c16afe4abb49eba66.exe	89
PID 4832 wrote to memory of 1244	4832	573ffa96a1eef92c16afe4abb49eba66.exe	91
PID 4832 wrote to memory of 1244	4832	573ffa96a1eef92c16afe4abb49eba66.exe	91
PID 4832 wrote to memory of 1244	4832	573ffa96a1eef92c16afe4abb49eba66.exe	91
PID 940 wrote to memory of 4280	940	RZEpLh0UP8cGOLp.exe	92
PID 940 wrote to memory of 4280	940	RZEpLh0UP8cGOLp.exe	92

C:\Users\Admin\AppData\Local\Temp\573ffa96a1eef92c16afe4abb49eba66.exe
"C:\Users\Admin\AppData\Local\Temp\573ffa96a1eef92c16afe4abb49eba66.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4832
- C:\Users\Admin\AppData\Local\Temp\RZEpLh0UP8cGOLp.exe
  C:\Users\Admin\AppData\Local\Temp\RZEpLh0UP8cGOLp.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:940
- - C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe
    dw20.exe -x -s 808
    3⤵
    - Checks processor information in registry
    - Enumerates system info in registry
    - Suspicious use of AdjustPrivilegeToken
    PID:4280
- 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:1244

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
2a70c42089a7050040e87d8f8a9b03d6

SHA1
67f0b606f488a9bd9ef8e2710a856abdb04ea874

SHA256
8003d0b82cd12826b476b6d11aa8c82c98a4bd32ea9ec6ea73ad237552ff1397

SHA512
e1714d011b4caaa2ef9a831fce4d4ccd9826e42da2e2f0f0057057716843f82f6176daa13d7f57459182af0b4c29af8a8f6ac54bc0c30093eedd0c22a6e1c9f4

Download Submit
C:\Users\Admin\AppData\Local\Temp\RZEpLh0UP8cGOLp.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/940-27-0x00007FFDE0440000-0x00007FFDE0DE1000-memory.dmp

Filesize
9.6MB

Download
memory/940-32-0x00007FFDE0440000-0x00007FFDE0DE1000-memory.dmp

Filesize
9.6MB

Download
memory/940-33-0x0000000000C50000-0x0000000000C60000-memory.dmp

Filesize
64KB

Download
memory/940-39-0x00007FFDE0440000-0x00007FFDE0DE1000-memory.dmp

Filesize
9.6MB

Download
memory/1244-8-0x0000000000940000-0x0000000000957000-memory.dmp

Filesize
92KB

Download
memory/1244-43-0x0000000000940000-0x0000000000957000-memory.dmp

Filesize
92KB

Download
memory/4832-0-0x0000000000760000-0x0000000000777000-memory.dmp

Filesize
92KB

Download
memory/4832-7-0x0000000000760000-0x0000000000777000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads