4a9006cf3b6e40360af21fbc2c9c419a58212f9fc06cb2a534240790a2e6dbac

Analysis

max time kernel
152s
max time network
149s
platform
windows7_x64
resource
win7v20201028
submitted
26-01-2021 02:37

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General

Target

c939f36967412e7e4c1a893ac6c9d38eee2d49516bd9168af2e0a33819ffe708.exe

Score

8^/10

persistence upx

Malware Config

Signatures

UPX packed file 2 IoCs

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

upx

Processes:

resource	yara_rule
behavioral21/memory/2040-4-0x0000000010000000-0x0000000010108000-memory.dmp	upx
behavioral21/memory/2040-7-0x0000000010000000-0x0000000010108000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

iexplore.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Windows\CurrentVersion\Run\DDR = "C:\\Users\\Admin\\AppData\\Roaming\\LFS.exe"	iexplore.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

c939f36967412e7e4c1a893ac6c9d38eee2d49516bd9168af2e0a33819ffe708.exe

description	pid	process	target process
PID 1752 set thread context of 2040	1752	c939f36967412e7e4c1a893ac6c9d38eee2d49516bd9168af2e0a33819ffe708.exe	iexplore.exe
PID 1752 set thread context of 1324	1752	c939f36967412e7e4c1a893ac6c9d38eee2d49516bd9168af2e0a33819ffe708.exe	iexplore.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

c939f36967412e7e4c1a893ac6c9d38eee2d49516bd9168af2e0a33819ffe708.exe

description	pid	process	target process
PID 1752 wrote to memory of 2040	1752	c939f36967412e7e4c1a893ac6c9d38eee2d49516bd9168af2e0a33819ffe708.exe	iexplore.exe
PID 1752 wrote to memory of 2040	1752	c939f36967412e7e4c1a893ac6c9d38eee2d49516bd9168af2e0a33819ffe708.exe	iexplore.exe
PID 1752 wrote to memory of 2040	1752	c939f36967412e7e4c1a893ac6c9d38eee2d49516bd9168af2e0a33819ffe708.exe	iexplore.exe
PID 1752 wrote to memory of 2040	1752	c939f36967412e7e4c1a893ac6c9d38eee2d49516bd9168af2e0a33819ffe708.exe	iexplore.exe
PID 1752 wrote to memory of 2040	1752	c939f36967412e7e4c1a893ac6c9d38eee2d49516bd9168af2e0a33819ffe708.exe	iexplore.exe
PID 1752 wrote to memory of 2040	1752	c939f36967412e7e4c1a893ac6c9d38eee2d49516bd9168af2e0a33819ffe708.exe	iexplore.exe
PID 1752 wrote to memory of 1324	1752	c939f36967412e7e4c1a893ac6c9d38eee2d49516bd9168af2e0a33819ffe708.exe	iexplore.exe
PID 1752 wrote to memory of 1324	1752	c939f36967412e7e4c1a893ac6c9d38eee2d49516bd9168af2e0a33819ffe708.exe	iexplore.exe
PID 1752 wrote to memory of 1324	1752	c939f36967412e7e4c1a893ac6c9d38eee2d49516bd9168af2e0a33819ffe708.exe	iexplore.exe
PID 1752 wrote to memory of 1324	1752	c939f36967412e7e4c1a893ac6c9d38eee2d49516bd9168af2e0a33819ffe708.exe	iexplore.exe
PID 1752 wrote to memory of 1324	1752	c939f36967412e7e4c1a893ac6c9d38eee2d49516bd9168af2e0a33819ffe708.exe	iexplore.exe
PID 1752 wrote to memory of 1324	1752	c939f36967412e7e4c1a893ac6c9d38eee2d49516bd9168af2e0a33819ffe708.exe	iexplore.exe

C:\Users\Admin\AppData\Local\Temp\c939f36967412e7e4c1a893ac6c9d38eee2d49516bd9168af2e0a33819ffe708.exe
"C:\Users\Admin\AppData\Local\Temp\c939f36967412e7e4c1a893ac6c9d38eee2d49516bd9168af2e0a33819ffe708.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1752

C:\Program Files (x86)\Internet Explorer\iexplore.exe
"C:\Program Files (x86)\Internet Explorer\iexplore.exe"
2⤵
PID:2040

C:\Program Files (x86)\Internet Explorer\iexplore.exe
"C:\Program Files (x86)\Internet Explorer\iexplore.exe"
2⤵
- Adds Run key to start application
PID:1324

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1324-9-0x00000000100AB290-mapping.dmp

Download
memory/1752-2-0x0000000075EB1000-0x0000000075EB3000-memory.dmp

Filesize
8KB

Download
memory/1752-3-0x00000000001C0000-0x00000000001C1000-memory.dmp

Filesize
4KB

Download
memory/2040-4-0x0000000010000000-0x0000000010108000-memory.dmp

Filesize
1.0MB

Download
memory/2040-5-0x00000000100AB290-mapping.dmp

Download
memory/2040-7-0x0000000010000000-0x0000000010108000-memory.dmp

Filesize
1.0MB

Download