fcd8096f60bf90e6db2b95d36d58cf5baf559a83c5ba373c2680c0d48f7d1817

Analysis

max time kernel
153s
max time network
77s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
06/12/2022, 23:17

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General

Target

fcd8096f60bf90e6db2b95d36d58cf5baf559a83c5ba373c2680c0d48f7d1817.exe
Size

1.1MB
MD5

653b70e03805502fa93f10fe76708042
SHA1

0c3535e420f7fb1d955571058242760fe4a195dd
SHA256

fcd8096f60bf90e6db2b95d36d58cf5baf559a83c5ba373c2680c0d48f7d1817
SHA512

07de3913528841aa159db0fbd8d3ecdf2fb929135929653637ea9b07ecb8731922fd1cdafb2802cfbc0a2218a9a6aeb19c5a37d5c1d23d5561407a6f8effa1ca
SSDEEP

12288:rbpHYUKy5U1bo9t8DMRSW9vbciUiLuAvOxMt11i27QitjlJ:r5sJo6YrFUiyAak11LtjlJ

Score

8^/10

persistence upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1744	svchest000.exe

UPX packed file 7 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/1544-55-0x0000000000400000-0x0000000000597000-memory.dmp	upx
behavioral1/memory/1544-56-0x0000000000400000-0x0000000000597000-memory.dmp	upx
behavioral1/memory/1544-58-0x0000000000400000-0x0000000000597000-memory.dmp	upx
behavioral1/memory/1544-59-0x00000000027C0000-0x0000000002957000-memory.dmp	upx
behavioral1/files/0x000a000000012314-61.dat	upx
behavioral1/memory/1744-63-0x0000000000400000-0x0000000000597000-memory.dmp	upx
behavioral1/memory/1744-65-0x0000000000400000-0x0000000000597000-memory.dmp	upx

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	fcd8096f60bf90e6db2b95d36d58cf5baf559a83c5ba373c2680c0d48f7d1817.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Kris = "C:\\Users\\Admin\\AppData\\Local\\Temp\\fcd8096f60bf90e6db2b95d36d58cf5baf559a83c5ba373c2680c0d48f7d1817.exe"	fcd8096f60bf90e6db2b95d36d58cf5baf559a83c5ba373c2680c0d48f7d1817.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1544	fcd8096f60bf90e6db2b95d36d58cf5baf559a83c5ba373c2680c0d48f7d1817.exe
1744	svchest000.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Windows\BJ.exe	fcd8096f60bf90e6db2b95d36d58cf5baf559a83c5ba373c2680c0d48f7d1817.exe
File created	\??\c:\Windows\BJ.exe	fcd8096f60bf90e6db2b95d36d58cf5baf559a83c5ba373c2680c0d48f7d1817.exe
File created	\??\c:\Windows\svchest000.exe	fcd8096f60bf90e6db2b95d36d58cf5baf559a83c5ba373c2680c0d48f7d1817.exe
File opened for modification	\??\c:\Windows\svchest000.exe	fcd8096f60bf90e6db2b95d36d58cf5baf559a83c5ba373c2680c0d48f7d1817.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1544 wrote to memory of 1744	1544	fcd8096f60bf90e6db2b95d36d58cf5baf559a83c5ba373c2680c0d48f7d1817.exe	28
PID 1544 wrote to memory of 1744	1544	fcd8096f60bf90e6db2b95d36d58cf5baf559a83c5ba373c2680c0d48f7d1817.exe	28
PID 1544 wrote to memory of 1744	1544	fcd8096f60bf90e6db2b95d36d58cf5baf559a83c5ba373c2680c0d48f7d1817.exe	28
PID 1544 wrote to memory of 1744	1544	fcd8096f60bf90e6db2b95d36d58cf5baf559a83c5ba373c2680c0d48f7d1817.exe	28

C:\Users\Admin\AppData\Local\Temp\fcd8096f60bf90e6db2b95d36d58cf5baf559a83c5ba373c2680c0d48f7d1817.exe
"C:\Users\Admin\AppData\Local\Temp\fcd8096f60bf90e6db2b95d36d58cf5baf559a83c5ba373c2680c0d48f7d1817.exe"
1⤵
- Adds Run key to start application
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1544
- \??\c:\Windows\svchest000.exe
  c:\Windows\svchest000.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  PID:1744

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\svchest000.exe

Filesize
1.1MB

MD5
653b70e03805502fa93f10fe76708042

SHA1
0c3535e420f7fb1d955571058242760fe4a195dd

SHA256
fcd8096f60bf90e6db2b95d36d58cf5baf559a83c5ba373c2680c0d48f7d1817

SHA512
07de3913528841aa159db0fbd8d3ecdf2fb929135929653637ea9b07ecb8731922fd1cdafb2802cfbc0a2218a9a6aeb19c5a37d5c1d23d5561407a6f8effa1ca

Download Submit
memory/1544-54-0x00000000764C1000-0x00000000764C3000-memory.dmp

Filesize
8KB

Download
memory/1544-55-0x0000000000400000-0x0000000000597000-memory.dmp

Filesize
1.6MB

Download
memory/1544-56-0x0000000000400000-0x0000000000597000-memory.dmp

Filesize
1.6MB

Download
memory/1544-58-0x0000000000400000-0x0000000000597000-memory.dmp

Filesize
1.6MB

Download
memory/1544-59-0x00000000027C0000-0x0000000002957000-memory.dmp

Filesize
1.6MB

Download
memory/1744-63-0x0000000000400000-0x0000000000597000-memory.dmp

Filesize
1.6MB

Download
memory/1744-65-0x0000000000400000-0x0000000000597000-memory.dmp

Filesize
1.6MB

Download