ed957ee27f623cf0401934b9da6258360c660939abfbd5b224d4fd2bcbb17306

Analysis

max time kernel
152s
max time network
128s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
03/10/2022, 16:31

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General

Target

ed957ee27f623cf0401934b9da6258360c660939abfbd5b224d4fd2bcbb17306.exe
Size

262KB
MD5

3623a07a2ef303aa67b0872632c0f470
SHA1

871d371cd6a790722d7c869ca351e4ee3dd8bfe4
SHA256

ed957ee27f623cf0401934b9da6258360c660939abfbd5b224d4fd2bcbb17306
SHA512

278a0e195d442e46ed7746d9b82a52d28dad8779e4fda541e1df81fbbe8d4446f6083c85500f5f1758b0f2fb172efc484b988d579d53352a70ab5d0d05db1190
SSDEEP

6144:5WunhxTXWVpcVmcOClV7cN1kyymJuc4EX:5WA6iIAZc

Score

10^/10

evasion persistence

Malware Config

Signatures

Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	ed957ee27f623cf0401934b9da6258360c660939abfbd5b224d4fd2bcbb17306.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	rmnor.exe

Executes dropped EXE 1 IoCs

pid	Process
1380	rmnor.exe

Loads dropped DLL 2 IoCs

pid	Process
1528	ed957ee27f623cf0401934b9da6258360c660939abfbd5b224d4fd2bcbb17306.exe
1528	ed957ee27f623cf0401934b9da6258360c660939abfbd5b224d4fd2bcbb17306.exe

Adds Run key to start application 2 TTPs 12 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\	ed957ee27f623cf0401934b9da6258360c660939abfbd5b224d4fd2bcbb17306.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\rmnor = "C:\\Users\\Admin\\rmnor.exe /x"	ed957ee27f623cf0401934b9da6258360c660939abfbd5b224d4fd2bcbb17306.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\rmnor = "C:\\Users\\Admin\\rmnor.exe /a"	rmnor.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\rmnor = "C:\\Users\\Admin\\rmnor.exe /e"	rmnor.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\	rmnor.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\rmnor = "C:\\Users\\Admin\\rmnor.exe /f"	rmnor.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\rmnor = "C:\\Users\\Admin\\rmnor.exe /l"	rmnor.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\rmnor = "C:\\Users\\Admin\\rmnor.exe /w"	rmnor.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\rmnor = "C:\\Users\\Admin\\rmnor.exe /m"	rmnor.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\rmnor = "C:\\Users\\Admin\\rmnor.exe /d"	rmnor.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\rmnor = "C:\\Users\\Admin\\rmnor.exe /j"	rmnor.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\rmnor = "C:\\Users\\Admin\\rmnor.exe /n"	rmnor.exe

Maps connected drives based on registry 3 TTPs 4 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	ed957ee27f623cf0401934b9da6258360c660939abfbd5b224d4fd2bcbb17306.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	ed957ee27f623cf0401934b9da6258360c660939abfbd5b224d4fd2bcbb17306.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	rmnor.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	rmnor.exe

Drops autorun.inf file 1 TTPs 1 IoCs

Malware can abuse Windows Autorun to spread further via attached volumes.

Replication Through Removable Media

T1091

description	ioc	Process
File opened for modification	C:\Users\Admin\c\autorun.inf	rmnor.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 56 IoCs

pid	Process
1528	ed957ee27f623cf0401934b9da6258360c660939abfbd5b224d4fd2bcbb17306.exe
1528	ed957ee27f623cf0401934b9da6258360c660939abfbd5b224d4fd2bcbb17306.exe
1528	ed957ee27f623cf0401934b9da6258360c660939abfbd5b224d4fd2bcbb17306.exe
1528	ed957ee27f623cf0401934b9da6258360c660939abfbd5b224d4fd2bcbb17306.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe
1380	rmnor.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1528	ed957ee27f623cf0401934b9da6258360c660939abfbd5b224d4fd2bcbb17306.exe
1380	rmnor.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1528 wrote to memory of 1380	1528	ed957ee27f623cf0401934b9da6258360c660939abfbd5b224d4fd2bcbb17306.exe	27
PID 1528 wrote to memory of 1380	1528	ed957ee27f623cf0401934b9da6258360c660939abfbd5b224d4fd2bcbb17306.exe	27
PID 1528 wrote to memory of 1380	1528	ed957ee27f623cf0401934b9da6258360c660939abfbd5b224d4fd2bcbb17306.exe	27
PID 1528 wrote to memory of 1380	1528	ed957ee27f623cf0401934b9da6258360c660939abfbd5b224d4fd2bcbb17306.exe	27

C:\Users\Admin\AppData\Local\Temp\ed957ee27f623cf0401934b9da6258360c660939abfbd5b224d4fd2bcbb17306.exe
"C:\Users\Admin\AppData\Local\Temp\ed957ee27f623cf0401934b9da6258360c660939abfbd5b224d4fd2bcbb17306.exe"
1⤵
- Modifies visiblity of hidden/system files in Explorer
- Loads dropped DLL
- Adds Run key to start application
- Maps connected drives based on registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1528
- C:\Users\Admin\rmnor.exe
  "C:\Users\Admin\rmnor.exe"
  2⤵
  - Modifies visiblity of hidden/system files in Explorer
  - Executes dropped EXE
  - Adds Run key to start application
  - Maps connected drives based on registry
  - Drops autorun.inf file
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:1380

Network

MITRE ATT&CK Enterprise v6

Initial Access

Replication Through Removable Media

T1091

Execution

Persistence

Hidden Files and Directories

T1158

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Replication Through Removable Media

T1091

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\rmnor.exe

Filesize
262KB

MD5
3623a07a2ef303aa67b0872632c0f470

SHA1
871d371cd6a790722d7c869ca351e4ee3dd8bfe4

SHA256
ed957ee27f623cf0401934b9da6258360c660939abfbd5b224d4fd2bcbb17306

SHA512
278a0e195d442e46ed7746d9b82a52d28dad8779e4fda541e1df81fbbe8d4446f6083c85500f5f1758b0f2fb172efc484b988d579d53352a70ab5d0d05db1190

Download Submit
C:\Users\Admin\rmnor.exe

Filesize
262KB

MD5
3623a07a2ef303aa67b0872632c0f470

SHA1
871d371cd6a790722d7c869ca351e4ee3dd8bfe4

SHA256
ed957ee27f623cf0401934b9da6258360c660939abfbd5b224d4fd2bcbb17306

SHA512
278a0e195d442e46ed7746d9b82a52d28dad8779e4fda541e1df81fbbe8d4446f6083c85500f5f1758b0f2fb172efc484b988d579d53352a70ab5d0d05db1190

Download Submit
\Users\Admin\rmnor.exe

Filesize
262KB

MD5
3623a07a2ef303aa67b0872632c0f470

SHA1
871d371cd6a790722d7c869ca351e4ee3dd8bfe4

SHA256
ed957ee27f623cf0401934b9da6258360c660939abfbd5b224d4fd2bcbb17306

SHA512
278a0e195d442e46ed7746d9b82a52d28dad8779e4fda541e1df81fbbe8d4446f6083c85500f5f1758b0f2fb172efc484b988d579d53352a70ab5d0d05db1190

Download Submit
\Users\Admin\rmnor.exe

Filesize
262KB

MD5
3623a07a2ef303aa67b0872632c0f470

SHA1
871d371cd6a790722d7c869ca351e4ee3dd8bfe4

SHA256
ed957ee27f623cf0401934b9da6258360c660939abfbd5b224d4fd2bcbb17306

SHA512
278a0e195d442e46ed7746d9b82a52d28dad8779e4fda541e1df81fbbe8d4446f6083c85500f5f1758b0f2fb172efc484b988d579d53352a70ab5d0d05db1190

Download Submit
memory/1528-56-0x0000000075021000-0x0000000075023000-memory.dmp

Filesize
8KB

Download