8acec9bc9d1aa3ca3dcc50293e2c115f1ed206b04f67e5141c8ebfd305d42fda

General

Target

8acec9bc9d1aa3ca3dcc50293e2c115f1ed206b04f67e5141c8ebfd305d42fda.exe
Size

370KB
MD5

8091833dc47aa8d21989bcc8707568e4
SHA1

57531109f42439992c5a345271d31ef5e2629280
SHA256

8acec9bc9d1aa3ca3dcc50293e2c115f1ed206b04f67e5141c8ebfd305d42fda
SHA512

9358616625595a61beb00a6d1e358a8254d4dfd949732ad8257f85228c7b2b921b78df3d3ff9b3f9d03819081be786315ad16de16887293a5e7baea27a0d8cd5
SSDEEP

6144:8862ZTPZdrokO97yoY8olVoAaQB+4NINOaA+eJzTaMYA2W/EUZR/5dFYGjkSoFju:rLh7rHi7HY/3JL4ARYA2nsR/9puFjT72

Score

9^/10

discovery persistence spyware stealer upx

Malware Config

Signatures

ACProtect 1.3x - 1.4x DLL software 2 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x0004000000022ddf-137.dat	acprotect
behavioral2/files/0x0004000000022ddf-138.dat	acprotect

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3080-132-0x0000000000400000-0x000000000046C000-memory.dmp	upx
behavioral2/files/0x0004000000022ddf-137.dat	upx
behavioral2/files/0x0004000000022ddf-138.dat	upx
behavioral2/memory/2328-139-0x0000000010000000-0x0000000010087000-memory.dmp	upx
behavioral2/memory/3080-140-0x0000000000400000-0x000000000046C000-memory.dmp	upx

Loads dropped DLL 1 IoCs

pid	Process
2328	rundll32.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
T1081

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\	8acec9bc9d1aa3ca3dcc50293e2c115f1ed206b04f67e5141c8ebfd305d42fda.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MSIDLL = "C:\\Windows\\SysWOW64\\rundll32.exe msirsh32.dll,aVqUVkhQnU"	8acec9bc9d1aa3ca3dcc50293e2c115f1ed206b04f67e5141c8ebfd305d42fda.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\msirsh32.dll	8acec9bc9d1aa3ca3dcc50293e2c115f1ed206b04f67e5141c8ebfd305d42fda.exe
File opened for modification	C:\Windows\SysWOW64\msirsh32.dll	8acec9bc9d1aa3ca3dcc50293e2c115f1ed206b04f67e5141c8ebfd305d42fda.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4992	3080	WerFault.exe	76

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
3080	8acec9bc9d1aa3ca3dcc50293e2c115f1ed206b04f67e5141c8ebfd305d42fda.exe
3080	8acec9bc9d1aa3ca3dcc50293e2c115f1ed206b04f67e5141c8ebfd305d42fda.exe
3080	8acec9bc9d1aa3ca3dcc50293e2c115f1ed206b04f67e5141c8ebfd305d42fda.exe
3080	8acec9bc9d1aa3ca3dcc50293e2c115f1ed206b04f67e5141c8ebfd305d42fda.exe
3080	8acec9bc9d1aa3ca3dcc50293e2c115f1ed206b04f67e5141c8ebfd305d42fda.exe
3080	8acec9bc9d1aa3ca3dcc50293e2c115f1ed206b04f67e5141c8ebfd305d42fda.exe
3080	8acec9bc9d1aa3ca3dcc50293e2c115f1ed206b04f67e5141c8ebfd305d42fda.exe
3080	8acec9bc9d1aa3ca3dcc50293e2c115f1ed206b04f67e5141c8ebfd305d42fda.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3080 wrote to memory of 2328	3080	8acec9bc9d1aa3ca3dcc50293e2c115f1ed206b04f67e5141c8ebfd305d42fda.exe	81
PID 3080 wrote to memory of 2328	3080	8acec9bc9d1aa3ca3dcc50293e2c115f1ed206b04f67e5141c8ebfd305d42fda.exe	81
PID 3080 wrote to memory of 2328	3080	8acec9bc9d1aa3ca3dcc50293e2c115f1ed206b04f67e5141c8ebfd305d42fda.exe	81

C:\Users\Admin\AppData\Local\Temp\8acec9bc9d1aa3ca3dcc50293e2c115f1ed206b04f67e5141c8ebfd305d42fda.exe
"C:\Users\Admin\AppData\Local\Temp\8acec9bc9d1aa3ca3dcc50293e2c115f1ed206b04f67e5141c8ebfd305d42fda.exe"
1⤵
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3080
- C:\Windows\SysWOW64\rundll32.exe
  C:\Windows\SysWOW64\rundll32.exe msirsh32.dll,aVqUVkhQnU
  2⤵
  - Loads dropped DLL
  PID:2328
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3080 -s 664
  2⤵
  - Program crash
  PID:4992

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3080 -ip 3080
1⤵
PID:4924

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\msirsh32.dll

Filesize
175KB

MD5
501457fd2ec6154443aa5144b08ec8e2

SHA1
6ab33026b6596c7e43c28456492cc8688988c9c0

SHA256
a8d78c6e1076f2d5a4abbf4abfeb64f2de3dd00841875b37afe4ab5f4b152a76

SHA512
2cfdadf2504d6dadbad25099ee0840c9065c4f82d1bcd4dd5382da2bde0b67b8ea80809b9c6cb30142e31305ea45e8f50062d6e584eca87f7f1c461c461c0670

Download Submit
C:\Windows\SysWOW64\msirsh32.dll

Filesize
175KB

MD5
501457fd2ec6154443aa5144b08ec8e2

SHA1
6ab33026b6596c7e43c28456492cc8688988c9c0

SHA256
a8d78c6e1076f2d5a4abbf4abfeb64f2de3dd00841875b37afe4ab5f4b152a76

SHA512
2cfdadf2504d6dadbad25099ee0840c9065c4f82d1bcd4dd5382da2bde0b67b8ea80809b9c6cb30142e31305ea45e8f50062d6e584eca87f7f1c461c461c0670

Download Submit
memory/2328-139-0x0000000010000000-0x0000000010087000-memory.dmp

Filesize
540KB

Download
memory/3080-132-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/3080-133-0x0000000002300000-0x000000000235A000-memory.dmp

Filesize
360KB

Download
memory/3080-134-0x00000000024E0000-0x0000000002567000-memory.dmp

Filesize
540KB

Download
memory/3080-135-0x00000000024E0000-0x0000000002567000-memory.dmp

Filesize
540KB

Download
memory/3080-140-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/3080-142-0x00000000024E0000-0x0000000002567000-memory.dmp

Filesize
540KB

Download
memory/3080-141-0x0000000002300000-0x000000000235A000-memory.dmp

Filesize
360KB

Download

Analysis

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