4b0dff5cc2ff949eb05f43c111c541bb0906bc63a8068816e7317e8411f4ff8b

Analysis

max time kernel
90s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
23-11-2022 17:17

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General

Target

4b0dff5cc2ff949eb05f43c111c541bb0906bc63a8068816e7317e8411f4ff8b.exe
Size

103KB
MD5

d3729bec572c3bb8fe3f831d98fa7c94
SHA1

4a90fe86fd894eaf31b699f101e2cf3be2d31406
SHA256

4b0dff5cc2ff949eb05f43c111c541bb0906bc63a8068816e7317e8411f4ff8b
SHA512

896806603a56b8239165db60d9c0d473b904f5d6f673fa7083b5424fdc4ab473aa2c2b8b8d3557e43d99be4e8af4ca28c341161ff990a2939e5ae42d46d8a827
SSDEEP

1536:cgKJn+wJf4nJtIJAz7z+Nc9sZrvrdPpbntnpn1nVn5n1nzJ3H1Tn1nVnZnxnZnth:cXJwE2fi4sZtuVmQ6h

Score

8^/10

discovery persistence

Malware Config

Signatures

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\RegisteredApplications = "C:\\Users\\Admin\\AppData\\Roaming\\jcrbfvtc\\curgdfbg.exe"	svchost.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

Maps connected drives based on registry 3 TTPs 2 IoCs

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

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

4b0dff5cc2ff949eb05f43c111c541bb0906bc63a8068816e7317e8411f4ff8b.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	4b0dff5cc2ff949eb05f43c111c541bb0906bc63a8068816e7317e8411f4ff8b.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	4b0dff5cc2ff949eb05f43c111c541bb0906bc63a8068816e7317e8411f4ff8b.exe

Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

4b0dff5cc2ff949eb05f43c111c541bb0906bc63a8068816e7317e8411f4ff8b.exe

pid process

1608 4b0dff5cc2ff949eb05f43c111c541bb0906bc63a8068816e7317e8411f4ff8b.exe

pid	process
1608	4b0dff5cc2ff949eb05f43c111c541bb0906bc63a8068816e7317e8411f4ff8b.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

4b0dff5cc2ff949eb05f43c111c541bb0906bc63a8068816e7317e8411f4ff8b.exe

description	pid	process	target process
PID 1608 wrote to memory of 4932	1608	4b0dff5cc2ff949eb05f43c111c541bb0906bc63a8068816e7317e8411f4ff8b.exe	svchost.exe
PID 1608 wrote to memory of 4932	1608	4b0dff5cc2ff949eb05f43c111c541bb0906bc63a8068816e7317e8411f4ff8b.exe	svchost.exe
PID 1608 wrote to memory of 4932	1608	4b0dff5cc2ff949eb05f43c111c541bb0906bc63a8068816e7317e8411f4ff8b.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\4b0dff5cc2ff949eb05f43c111c541bb0906bc63a8068816e7317e8411f4ff8b.exe
"C:\Users\Admin\AppData\Local\Temp\4b0dff5cc2ff949eb05f43c111c541bb0906bc63a8068816e7317e8411f4ff8b.exe"
1⤵
- Maps connected drives based on registry
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1608

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Adds policy Run key to start application
PID:4932

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1608-132-0x00000000021A0000-0x00000000021AD000-memory.dmp

Filesize
52KB

Download
memory/1608-133-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/1608-134-0x00000000021D0000-0x00000000021E9000-memory.dmp

Filesize
100KB

Download
memory/1608-135-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/1608-137-0x0000000000400000-0x0000000000405000-memory.dmp

Filesize
20KB

Download
memory/4932-136-0x0000000000000000-mapping.dmp

Download
memory/4932-138-0x0000000000E80000-0x0000000000E93000-memory.dmp

Filesize
76KB

Download
memory/4932-139-0x0000000001480000-0x0000000001499000-memory.dmp

Filesize
100KB

Download