dbdd757b896e645d201649f4d219d1aec14c68a3f4a1a8e1a8d514eba0dc7b33

General

Target

b5f9cd3abfe182554e9edaddad333c82.exe
Size

91KB
MD5

b5f9cd3abfe182554e9edaddad333c82
SHA1

f7a0ca597a745008a7fcafe9e076c16ebbe4b913
SHA256

dbdd757b896e645d201649f4d219d1aec14c68a3f4a1a8e1a8d514eba0dc7b33
SHA512

9db40bffc1dea33bd8aec70a2df481754be87049bf527ad7e2e57e68ac321adfd530740668099f75e76db3c7f697f672fa5361763c069a48b02a04c7ec7c251b
SSDEEP

1536:s9Z3KcR4mjD9r8226+lWwceEyfuUTKhwKrhGtO8J6nDsNDNgGV52RAZ7Eru2kjR/:sr3KcWmjRrzSkgrWZGo8JWDsNDNg6qAr

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
4000	Nv79Ivcp0tnqLD0.exe
4508	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/240-0-0x0000000000300000-0x0000000000317000-memory.dmp	upx
behavioral2/files/0x0008000000023218-6.dat	upx
behavioral2/memory/240-8-0x0000000000300000-0x0000000000317000-memory.dmp	upx
behavioral2/memory/4508-9-0x0000000000160000-0x0000000000177000-memory.dmp	upx
behavioral2/files/0x000600000002275d-12.dat	upx
behavioral2/memory/4508-41-0x0000000000160000-0x0000000000177000-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"	b5f9cd3abfe182554e9edaddad333c82.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	b5f9cd3abfe182554e9edaddad333c82.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	240	b5f9cd3abfe182554e9edaddad333c82.exe
Token: SeDebugPrivilege	4508	CTS.exe
Token: SeBackupPrivilege	572	dw20.exe
Token: SeBackupPrivilege	572	dw20.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 240 wrote to memory of 4000	240	b5f9cd3abfe182554e9edaddad333c82.exe	89
PID 240 wrote to memory of 4000	240	b5f9cd3abfe182554e9edaddad333c82.exe	89
PID 240 wrote to memory of 4508	240	b5f9cd3abfe182554e9edaddad333c82.exe	90
PID 240 wrote to memory of 4508	240	b5f9cd3abfe182554e9edaddad333c82.exe	90
PID 240 wrote to memory of 4508	240	b5f9cd3abfe182554e9edaddad333c82.exe	90
PID 4000 wrote to memory of 572	4000	Nv79Ivcp0tnqLD0.exe	92
PID 4000 wrote to memory of 572	4000	Nv79Ivcp0tnqLD0.exe	92

C:\Users\Admin\AppData\Local\Temp\b5f9cd3abfe182554e9edaddad333c82.exe
"C:\Users\Admin\AppData\Local\Temp\b5f9cd3abfe182554e9edaddad333c82.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:240
- C:\Users\Admin\AppData\Local\Temp\Nv79Ivcp0tnqLD0.exe
  C:\Users\Admin\AppData\Local\Temp\Nv79Ivcp0tnqLD0.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:4000
- - C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe
    dw20.exe -x -s 796
    3⤵
    - Checks processor information in registry
    - Enumerates system info in registry
    - Suspicious use of AdjustPrivilegeToken
    PID:572
- 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:4508

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
358KB

MD5
5ca9da4b55ac7931ee59570c4671c85d

SHA1
9267bca6af26c66b9cfb58ef9d108345815b0a04

SHA256
80a54edf47d24ea1c260e77eeb035351b034d14c6b450e295e581fc4de7b70bd

SHA512
c5c0df14f5b4601452c4fe741fde8a07df88681b84864ffc26ed4c0457a31729c5e29cf75b2c69a74783292c99d85a29e9f890a4a402462877fc181a349691fd

Download Submit
C:\Users\Admin\AppData\Local\Temp\Nv79Ivcp0tnqLD0.exe

Filesize
56KB

MD5
e115521ba14b75f53dcdff087ec6898f

SHA1
87103a892bb514a93d485fba221bacb9da3aae25

SHA256
59b284d0ad4c2634938e70fae67d9048bd98422d052fbd745a9b80b5fae7ae29

SHA512
ab3d097bcf11bf7327a28124052b210f5fb13b9bfb9b7376cae1ba5c30182a330506935288a7fe06b7e3fdd82b57f5c31638f1c301738342819c772b346fa35a

Download Submit
C:\Windows\CTS.exe

Filesize
35KB

MD5
93e5f18caebd8d4a2c893e40e5f38232

SHA1
fd55c4e6bcd108bce60ea719c06dc9c4d0adafa6

SHA256
a66c4b98becac2f69cb107cd087d7a2ca9ef511bc3b83367b1f440f11dd159a8

SHA512
986583610d27caae2080834301d072557c5d2c85e33f0d19ab1245d7eae8db146397461572ddb3d491be16f3af210720d54267dac838fdad8fe34afa3d6b7f54

Download Submit
memory/240-0-0x0000000000300000-0x0000000000317000-memory.dmp

Filesize
92KB

Download
memory/240-8-0x0000000000300000-0x0000000000317000-memory.dmp

Filesize
92KB

Download
memory/4000-27-0x00007FFFEB5D0000-0x00007FFFEBF71000-memory.dmp

Filesize
9.6MB

Download
memory/4000-28-0x0000000001260000-0x0000000001270000-memory.dmp

Filesize
64KB

Download
memory/4000-29-0x00007FFFEB5D0000-0x00007FFFEBF71000-memory.dmp

Filesize
9.6MB

Download
memory/4000-40-0x00007FFFEB5D0000-0x00007FFFEBF71000-memory.dmp

Filesize
9.6MB

Download
memory/4508-9-0x0000000000160000-0x0000000000177000-memory.dmp

Filesize
92KB

Download
memory/4508-41-0x0000000000160000-0x0000000000177000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads