665382e82d61b5c61f6c9494d925a24a0fc57ec0674b654c6ff9be9399bfc638

General

Target

1a83c24ba1e7d70afe3bec892e9531ce.exe
Size

134KB
MD5

1a83c24ba1e7d70afe3bec892e9531ce
SHA1

b01c7ee46cb7a7accd4cda935e22356249148d0e
SHA256

665382e82d61b5c61f6c9494d925a24a0fc57ec0674b654c6ff9be9399bfc638
SHA512

40a97fb09d956224517c5463c5a29962619a9154ee3b73580063c2138f330cdf1141d4fb044a074fd9688f1ef4cce09e3d95a4e7f4566ee49a97ea61ed91418c
SSDEEP

3072:HnOn7t7XpdpCCTg/sxFgJceq8K9CCxDsRvG40V6iABioK:HKpdcCrT/8KYCxDSG4k6iOE

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3580	downloadmr.exe

Loads dropped DLL 2 IoCs

pid	Process
4980	1a83c24ba1e7d70afe3bec892e9531ce.exe
4980	1a83c24ba1e7d70afe3bec892e9531ce.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Modifies system certificate store 2 TTPs 3 IoCs

Install Root Certificate

T1553.004

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\4EB6D578499B1CCF5F581EAD56BE3D9B6744A5E5	downloadmr.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\4EB6D578499B1CCF5F581EAD56BE3D9B6744A5E5\Blob = 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	downloadmr.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\4EB6D578499B1CCF5F581EAD56BE3D9B6744A5E5\Blob = 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	downloadmr.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3580	downloadmr.exe
3580	downloadmr.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4980 wrote to memory of 3580	4980	1a83c24ba1e7d70afe3bec892e9531ce.exe	89
PID 4980 wrote to memory of 3580	4980	1a83c24ba1e7d70afe3bec892e9531ce.exe	89
PID 4980 wrote to memory of 3580	4980	1a83c24ba1e7d70afe3bec892e9531ce.exe	89

C:\Users\Admin\AppData\Local\Temp\1a83c24ba1e7d70afe3bec892e9531ce.exe
"C:\Users\Admin\AppData\Local\Temp\1a83c24ba1e7d70afe3bec892e9531ce.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:4980
- C:\Users\Admin\AppData\Local\Temp\nsx4047.tmp\downloadmr.exe
  C:\Users\Admin\AppData\Local\Temp\nsx4047.tmp\downloadmr.exe /e2854568 /u4f2b9a7a-4984-4696-9db8-240f5bc06f2f
  2⤵
  - Executes dropped EXE
  - Modifies system certificate store
  - Suspicious use of SetWindowsHookEx
  PID:3580

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Subvert Trust Controls

1

T1553

Install Root Certificate

1

T1553.004

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\nsx4047.tmp\System.dll

Filesize
21KB

MD5
5ebc73650256e9c8ddbcda231db829a1

SHA1
988d4535e18754ab2a6248abae96c5697d7dbcd5

SHA256
1eaa543842df7795404184e8892a1654b0773dbc9bd8b54c7fdb9e68f4355493

SHA512
b21266e76fc7263af982a1336a766e47ccf348ed56b305dbb09f03574c9b2a7309f12200e80d86f9a251381be6e87a41206447f11c51899cb31fba10da1d5270

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsx4047.tmp\downloadmr.exe

Filesize
135KB

MD5
fb753ca8f8abe185c761c5a729552f05

SHA1
d87aeac1b5c45792997dd6da20687c2a60072665

SHA256
d9b21b59169dc040c604bf10bf53521633fbe54911a32ae9ea78136297f3c454

SHA512
271be08c81bc23ecf3ab0c6355f7c171cbd227b773b1cde3ff6389ea01246952bee4d8c213f4e2428ff6f62510dfbe609c66f079e0d4b03c148894989061ac15

Download Submit
memory/3580-13-0x0000000073ED0000-0x0000000074481000-memory.dmp

Filesize
5.7MB

Download
memory/3580-14-0x0000000073ED0000-0x0000000074481000-memory.dmp

Filesize
5.7MB

Download
memory/3580-15-0x0000000000650000-0x0000000000660000-memory.dmp

Filesize
64KB

Download
memory/3580-27-0x0000000000650000-0x0000000000660000-memory.dmp

Filesize
64KB

Download
memory/3580-26-0x0000000000650000-0x0000000000660000-memory.dmp

Filesize
64KB

Download
memory/3580-29-0x0000000000650000-0x0000000000660000-memory.dmp

Filesize
64KB

Download
memory/3580-28-0x0000000000650000-0x0000000000660000-memory.dmp

Filesize
64KB

Download
memory/3580-31-0x0000000073ED0000-0x0000000074481000-memory.dmp

Filesize
5.7MB

Download
memory/4980-35-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download

Analysis

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