20377d2626f676a651c526d6e9808bdea9e4ac20f426e5f9b297b90f984781b6

Analysis

max time kernel
141s
max time network
128s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
03-04-2024 07:02

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General

Target

20377d2626f676a651c526d6e9808bdea9e4ac20f426e5f9b297b90f984781b6.exe
Size

197KB
MD5

3d48daf09cb0deba593f8e31433653fb
SHA1

d4c261deebb1b4246287e6a754cd1118b53d4886
SHA256

20377d2626f676a651c526d6e9808bdea9e4ac20f426e5f9b297b90f984781b6
SHA512

865a75bcbf9f18c4b1ee6e7445a91aa468831cd70b52fdc99c989c38535c882091d0b11e44d99d8a576030aa133d96549db79730308b1fa5235cceff016400e1
SSDEEP

6144:rBs27MMLyX5HXXXDTXXXOGqIII+pXXX5AYjKXXXDoXXXG6XXXxXXXLIIIEAkOCOg:rK20HXXX/XXXFqIIIcXXX5j2XXXcXXXp

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

2504 cmd.exe
Executes dropped EXE 1 IoCs

Processes:

rwmhost.exe

pid process

3016 rwmhost.exe

pid	process
2504	cmd.exe

pid	process
3016	rwmhost.exe

Drops file in Windows directory 2 IoCs

Processes:

20377d2626f676a651c526d6e9808bdea9e4ac20f426e5f9b297b90f984781b6.exe

description	ioc	process
File created	C:\Windows\Debug\rwmhost.exe	20377d2626f676a651c526d6e9808bdea9e4ac20f426e5f9b297b90f984781b6.exe
File opened for modification	C:\Windows\Debug\rwmhost.exe	20377d2626f676a651c526d6e9808bdea9e4ac20f426e5f9b297b90f984781b6.exe

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

rwmhost.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	rwmhost.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rwmhost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

20377d2626f676a651c526d6e9808bdea9e4ac20f426e5f9b297b90f984781b6.exe

description pid process

Token: SeIncBasePriorityPrivilege 2140 20377d2626f676a651c526d6e9808bdea9e4ac20f426e5f9b297b90f984781b6.exe

description	pid	process
Token: SeIncBasePriorityPrivilege	2140	20377d2626f676a651c526d6e9808bdea9e4ac20f426e5f9b297b90f984781b6.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

20377d2626f676a651c526d6e9808bdea9e4ac20f426e5f9b297b90f984781b6.exe

description	pid	process	target process
PID 2140 wrote to memory of 2504	2140	20377d2626f676a651c526d6e9808bdea9e4ac20f426e5f9b297b90f984781b6.exe	cmd.exe
PID 2140 wrote to memory of 2504	2140	20377d2626f676a651c526d6e9808bdea9e4ac20f426e5f9b297b90f984781b6.exe	cmd.exe
PID 2140 wrote to memory of 2504	2140	20377d2626f676a651c526d6e9808bdea9e4ac20f426e5f9b297b90f984781b6.exe	cmd.exe
PID 2140 wrote to memory of 2504	2140	20377d2626f676a651c526d6e9808bdea9e4ac20f426e5f9b297b90f984781b6.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\20377d2626f676a651c526d6e9808bdea9e4ac20f426e5f9b297b90f984781b6.exe
"C:\Users\Admin\AppData\Local\Temp\20377d2626f676a651c526d6e9808bdea9e4ac20f426e5f9b297b90f984781b6.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2140

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\20377D~1.EXE > nul
2⤵
- Deletes itself
PID:2504

C:\Windows\Debug\rwmhost.exe
C:\Windows\Debug\rwmhost.exe
1⤵
- Executes dropped EXE
- Checks processor information in registry
PID:3016

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

Replay Monitor

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Downloads

C:\Windows\debug\rwmhost.exe

Filesize
197KB

MD5
11d7a0b1accb626fc8cf9604d2aedafd

SHA1
595c4c287ee371977343f0a8cf7fb7489f986406

SHA256
ff101cf54cd3ff26391cc8c74dca18de911c74d2f218bbf3e8f9c753611be9f2

SHA512
51e72f0a76f6c5ada204db1abcdd867259200c4cb329fb49565de146cf91cd56d32f264e015486b20cbab1e5328b9daaff1591bdf7a2b6ab8f5c8400328097c1

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