b76c29329ab1e6ad675dd8fdf34133da6d5d1da410b654fef9a7ca4c780f4e0a

Analysis

max time kernel
132s
max time network
140s
platform
windows10-2004_x64
resource
win10v2004-20230831-en
resource tags

arch:x64arch:x86image:win10v2004-20230831-enlocale:en-usos:windows10-2004-x64system
submitted
12-09-2023 18:19

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General

Target

remcmdstub.exe
Size

53KB
MD5

fe8978aeac17836d0b99c3edb88de357
SHA1

d7320274619baeb175855406d1027d02f845fb6c
SHA256

577927563589c3c9d05c510bce5f3cd9a55ea1de155e50e87c066bbff290a6fe
SHA512

68b6c647b40f071a602dcecd580232aca8434c7338837debda9d1ec37776415f680ac184ffb1497c93caa7353276d41d5df77538e004c1ffd168217df2cb5262
SSDEEP

768:vehWO78043LHCTPQuw/T3cgCsMl2PLLW/bC:vAb43LuPQFTSl2PLaTC

Score

5^/10

Malware Config

Signatures

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallAgent\Checkpoints\9NCBCSZSJRSB.dat	svchost.exe
File opened for modification	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallAgent\Checkpoints\9NCBCSZSJRSB.dat	svchost.exe
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{C365708C-FA16-447E-8233-A47FC7B42CBE}.catalogItem	svchost.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	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	svchost.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	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	svchost.exe

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\remcmdstub.exe
"C:\Users\Admin\AppData\Local\Temp\remcmdstub.exe"
1⤵
PID:5088

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p
1⤵
- Drops file in System32 directory
- Checks processor information in registry
- Enumerates system info in registry
PID:948

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\wsu6387.tmp

Filesize
14KB

MD5
c01eaa0bdcd7c30a42bbb35a9acbf574

SHA1
0aee3e1b873e41d040f1991819d0027b6cc68f54

SHA256
32297224427103aa1834dba276bf5d49cd5dd6bda0291422e47ad0d0706c6d40

SHA512
d26ff775ad39425933cd3df92209faa53ec5b701e65bfbcccc64ce8dd3e79f619a9bad7cc975a98a95f2006ae89e50551877fc315a3050e48d5ab89e0802e2b7

Download Submit
C:\Windows\System32\config\systemprofile\AppData\Local\Microsoft\InstallAgent\Checkpoints\9NCBCSZSJRSB.dat

Filesize
29KB

MD5
9862a37e19c4b15d8c0db4aa80b63fc5

SHA1
316523e8437906206fefb2e62cd23fcdf736849c

SHA256
ea891270a41e65e58bd54a41c50856e6bcd7175ddfb892f2f82969d259c7deee

SHA512
df32291b39795d7d53c4cc30df142eb1f5eaeb74ddee45eab1e72ed745ee98a4d6a72c8b7d42508e3e168dad500ae76a95f413ccfd8ea39bbc84132f724cd756

Download Submit
C:\Windows\System32\config\systemprofile\AppData\Local\Microsoft\InstallAgent\Checkpoints\9NCBCSZSJRSB.dat

Filesize
29KB

MD5
4ef2be90d2df544eea13feb36b752df8

SHA1
4c5efd2b2ac5dcb91ac42713599ba3202a4b7928

SHA256
eebc3efabc25abae6e0ed53b9a1294d3c4bf5be0bdc9dda0334dce2c96d54f92

SHA512
67ad582efd997b3959c28d75bf754dc44c58dcd6af4e905f4a842e41b34a2d39babf7f68205fb9ff570466f7910693e1e5d6fe2e9dd9ef69fccd880e357d4534

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads