7c62914bc8ee5e8ead82b49aa53696f62918c0ab3a1554fcbffdad7f6a03fe0e

General

Target

740914202351d114eb8aafdb151f337e.exe
Size

85KB
MD5

740914202351d114eb8aafdb151f337e
SHA1

19c54e4b348d435f243823d11d958cd95e386ca3
SHA256

7c62914bc8ee5e8ead82b49aa53696f62918c0ab3a1554fcbffdad7f6a03fe0e
SHA512

9c6758b233474fcd2dec4220ca08d497767656dabdf7c7bc01fbaa772947237dab688d68768605fa4ab2d3a658a12be9c4dad6ff2fc8fd3a53a4ab365c261ff1
SSDEEP

1536:SKcR4mjD9r823F9OE5n8o24J53x3PC3TXRL7EUeh4r+l:SKcWmjRrz36EF80J53dP8RL4jh4r+l

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
4728	WK7LZH9xNh5BYRz.exe
3788	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/3460-0-0x0000000000F30000-0x0000000000F47000-memory.dmp	upx
behavioral2/files/0x000600000002313e-6.dat	upx
behavioral2/memory/3788-8-0x00000000007B0000-0x00000000007C7000-memory.dmp	upx
behavioral2/memory/3460-9-0x0000000000F30000-0x0000000000F47000-memory.dmp	upx
behavioral2/files/0x0007000000022556-13.dat	upx
behavioral2/memory/3788-42-0x00000000007B0000-0x00000000007C7000-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"	740914202351d114eb8aafdb151f337e.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	740914202351d114eb8aafdb151f337e.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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	dw20.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	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	3460	740914202351d114eb8aafdb151f337e.exe
Token: SeDebugPrivilege	3788	CTS.exe
Token: SeBackupPrivilege	4656	dw20.exe
Token: SeBackupPrivilege	4656	dw20.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 3460 wrote to memory of 4728	3460	740914202351d114eb8aafdb151f337e.exe	87
PID 3460 wrote to memory of 4728	3460	740914202351d114eb8aafdb151f337e.exe	87
PID 3460 wrote to memory of 3788	3460	740914202351d114eb8aafdb151f337e.exe	89
PID 3460 wrote to memory of 3788	3460	740914202351d114eb8aafdb151f337e.exe	89
PID 3460 wrote to memory of 3788	3460	740914202351d114eb8aafdb151f337e.exe	89
PID 4728 wrote to memory of 4656	4728	WK7LZH9xNh5BYRz.exe	91
PID 4728 wrote to memory of 4656	4728	WK7LZH9xNh5BYRz.exe	91

C:\Users\Admin\AppData\Local\Temp\740914202351d114eb8aafdb151f337e.exe
"C:\Users\Admin\AppData\Local\Temp\740914202351d114eb8aafdb151f337e.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3460
- C:\Users\Admin\AppData\Local\Temp\WK7LZH9xNh5BYRz.exe
  C:\Users\Admin\AppData\Local\Temp\WK7LZH9xNh5BYRz.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:4728
- - C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe
    dw20.exe -x -s 816
    3⤵
    - Checks processor information in registry
    - Enumerates system info in registry
    - Suspicious use of AdjustPrivilegeToken
    PID:4656
- 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:3788

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
34f594ce40bf54cf70d3dbe998a8270c

SHA1
a5c3893e27eadfcd69edca2e46140b8ff13e7a24

SHA256
8c1eaa7e5fcdf2772df6e4b95b609b9dbecf048f8ab28f47f40d818b28cf612a

SHA512
621a5e38c68eb37f9a265cb578aaef8abd8557dddf4d15da39b8b42df0cc43eb13666e80e7f223276c497a9743924534e6f16c237064122f5d6869fe8f2f3e52

Download Submit
C:\Users\Admin\AppData\Local\Temp\WK7LZH9xNh5BYRz.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/3460-0-0x0000000000F30000-0x0000000000F47000-memory.dmp

Filesize
92KB

Download
memory/3460-9-0x0000000000F30000-0x0000000000F47000-memory.dmp

Filesize
92KB

Download
memory/3788-8-0x00000000007B0000-0x00000000007C7000-memory.dmp

Filesize
92KB

Download
memory/3788-42-0x00000000007B0000-0x00000000007C7000-memory.dmp

Filesize
92KB

Download
memory/4728-27-0x00007FF8C2660000-0x00007FF8C3001000-memory.dmp

Filesize
9.6MB

Download
memory/4728-28-0x0000000000B60000-0x0000000000B70000-memory.dmp

Filesize
64KB

Download
memory/4728-29-0x00007FF8C2660000-0x00007FF8C3001000-memory.dmp

Filesize
9.6MB

Download
memory/4728-41-0x00007FF8C2660000-0x00007FF8C3001000-memory.dmp

Filesize
9.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads