5ba455054ac5d0e357bc1f4f39a22a6743f98a28010de75a80c60b86eae00a98

General

Target

77ef18ff6e33e71b9b89963e524c6173.exe
Size

85KB
MD5

77ef18ff6e33e71b9b89963e524c6173
SHA1

62535e45b9ec8414e60af7461e004dd7ad9dfb81
SHA256

5ba455054ac5d0e357bc1f4f39a22a6743f98a28010de75a80c60b86eae00a98
SHA512

d924259dcca695c6affe95cddee8be10529c1b6090bb202bf6442e264a7b2c8e3fa508584aaff381f583f00e080e3c1df91b91d71312197bf4972099b1533896
SSDEEP

1536:SKcR4mjD9r823FY8hMov5XEPIaRUGCYIdSMKgsPVFsctNjrYac/ivJ2USaa:SKcWmjRrz3vyoFsNRUXY0nsPtzvY8vM7

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
216	2eczSGuWhEMI93F.exe
3448	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 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3020-0-0x0000000000200000-0x0000000000217000-memory.dmp	upx
behavioral2/files/0x00070000000231f5-6.dat	upx
behavioral2/memory/3020-7-0x0000000000200000-0x0000000000217000-memory.dmp	upx
behavioral2/memory/3448-9-0x0000000000260000-0x0000000000277000-memory.dmp	upx
behavioral2/files/0x000900000001e68a-13.dat	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"	77ef18ff6e33e71b9b89963e524c6173.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	77ef18ff6e33e71b9b89963e524c6173.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	3020	77ef18ff6e33e71b9b89963e524c6173.exe
Token: SeDebugPrivilege	3448	CTS.exe
Token: SeBackupPrivilege	3652	dw20.exe
Token: SeBackupPrivilege	3652	dw20.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 3020 wrote to memory of 216	3020	77ef18ff6e33e71b9b89963e524c6173.exe	84
PID 3020 wrote to memory of 216	3020	77ef18ff6e33e71b9b89963e524c6173.exe	84
PID 3020 wrote to memory of 3448	3020	77ef18ff6e33e71b9b89963e524c6173.exe	86
PID 3020 wrote to memory of 3448	3020	77ef18ff6e33e71b9b89963e524c6173.exe	86
PID 3020 wrote to memory of 3448	3020	77ef18ff6e33e71b9b89963e524c6173.exe	86
PID 216 wrote to memory of 3652	216	2eczSGuWhEMI93F.exe	87
PID 216 wrote to memory of 3652	216	2eczSGuWhEMI93F.exe	87

C:\Users\Admin\AppData\Local\Temp\77ef18ff6e33e71b9b89963e524c6173.exe
"C:\Users\Admin\AppData\Local\Temp\77ef18ff6e33e71b9b89963e524c6173.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3020
- C:\Users\Admin\AppData\Local\Temp\2eczSGuWhEMI93F.exe
  C:\Users\Admin\AppData\Local\Temp\2eczSGuWhEMI93F.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:216
- - 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:3652
- 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:3448

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
efdeb55c082a5cd4b4bbbd688493f9f9

SHA1
27070b5c37212fdf20b8d118e06bb8a5404ac250

SHA256
3ba0d6317376f0133986ae3c5f7d6b9335b70da95e6659dccbdc064d056d89b3

SHA512
a6589c5134836836973712ff22ca899ecea82a5e0b2b7a210f697ba90f86b7c85e2fc1aab0bb35ac50be8ad0d2a1e83db340cc4358492fb01c8e6bdafe4bdefc

Download Submit
C:\Users\Admin\AppData\Local\Temp\2eczSGuWhEMI93F.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/216-27-0x00007FFB0D560000-0x00007FFB0DF01000-memory.dmp

Filesize
9.6MB

Download
memory/216-32-0x00007FFB0D560000-0x00007FFB0DF01000-memory.dmp

Filesize
9.6MB

Download
memory/216-33-0x0000000000AD0000-0x0000000000AE0000-memory.dmp

Filesize
64KB

Download
memory/216-39-0x00007FFB0D560000-0x00007FFB0DF01000-memory.dmp

Filesize
9.6MB

Download
memory/3020-0-0x0000000000200000-0x0000000000217000-memory.dmp

Filesize
92KB

Download
memory/3020-7-0x0000000000200000-0x0000000000217000-memory.dmp

Filesize
92KB

Download
memory/3448-9-0x0000000000260000-0x0000000000277000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads