f9d9d00a974b259b747217d021d95c7902c8a8807539db0bbf43939be972e281

Analysis

max time kernel
150s
max time network
151s
platform
windows10_x64
resource
win10v20210408
submitted
16-07-2021 17:35

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General

Target

2fc92db641004976273712cdacab3f1416b6f7fcb8a6019bbb6ca539e9effefc.exe

Score

8^/10

persistence upx

Malware Config

Signatures

UPX packed file 1 IoCs

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

upx

Processes:

resource	yara_rule
behavioral4/memory/2956-115-0x0000000013140000-0x0000000013CEB000-memory.dmp	upx

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

iexplore.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\tkwxazhtxipewuladisg = "C:\\Users\\Admin\\AppData\\Roaming\\tkwxazhtxipewuladisg\\tkwxazhtxipewuladisg.exe"	iexplore.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

2fc92db641004976273712cdacab3f1416b6f7fcb8a6019bbb6ca539e9effefc.exe

description	pid	process	target process
PID 652 set thread context of 2956	652	2fc92db641004976273712cdacab3f1416b6f7fcb8a6019bbb6ca539e9effefc.exe	iexplore.exe
PID 652 set thread context of 1960	652	2fc92db641004976273712cdacab3f1416b6f7fcb8a6019bbb6ca539e9effefc.exe	iexplore.exe
PID 652 set thread context of 1600	652	2fc92db641004976273712cdacab3f1416b6f7fcb8a6019bbb6ca539e9effefc.exe	iexplore.exe
PID 652 set thread context of 2860	652	2fc92db641004976273712cdacab3f1416b6f7fcb8a6019bbb6ca539e9effefc.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 behavior: EnumeratesProcesses 2 IoCs

Processes:

iexplore.exe

pid process

2956 iexplore.exe
2956 iexplore.exe

pid	process
2956	iexplore.exe
2956	iexplore.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

2fc92db641004976273712cdacab3f1416b6f7fcb8a6019bbb6ca539e9effefc.exe

description	pid	process	target process
PID 652 wrote to memory of 2956	652	2fc92db641004976273712cdacab3f1416b6f7fcb8a6019bbb6ca539e9effefc.exe	iexplore.exe
PID 652 wrote to memory of 2956	652	2fc92db641004976273712cdacab3f1416b6f7fcb8a6019bbb6ca539e9effefc.exe	iexplore.exe
PID 652 wrote to memory of 2956	652	2fc92db641004976273712cdacab3f1416b6f7fcb8a6019bbb6ca539e9effefc.exe	iexplore.exe
PID 652 wrote to memory of 2956	652	2fc92db641004976273712cdacab3f1416b6f7fcb8a6019bbb6ca539e9effefc.exe	iexplore.exe
PID 652 wrote to memory of 2956	652	2fc92db641004976273712cdacab3f1416b6f7fcb8a6019bbb6ca539e9effefc.exe	iexplore.exe
PID 652 wrote to memory of 1960	652	2fc92db641004976273712cdacab3f1416b6f7fcb8a6019bbb6ca539e9effefc.exe	iexplore.exe
PID 652 wrote to memory of 1960	652	2fc92db641004976273712cdacab3f1416b6f7fcb8a6019bbb6ca539e9effefc.exe	iexplore.exe
PID 652 wrote to memory of 1960	652	2fc92db641004976273712cdacab3f1416b6f7fcb8a6019bbb6ca539e9effefc.exe	iexplore.exe
PID 652 wrote to memory of 1960	652	2fc92db641004976273712cdacab3f1416b6f7fcb8a6019bbb6ca539e9effefc.exe	iexplore.exe
PID 652 wrote to memory of 1960	652	2fc92db641004976273712cdacab3f1416b6f7fcb8a6019bbb6ca539e9effefc.exe	iexplore.exe
PID 652 wrote to memory of 1600	652	2fc92db641004976273712cdacab3f1416b6f7fcb8a6019bbb6ca539e9effefc.exe	iexplore.exe
PID 652 wrote to memory of 1600	652	2fc92db641004976273712cdacab3f1416b6f7fcb8a6019bbb6ca539e9effefc.exe	iexplore.exe
PID 652 wrote to memory of 1600	652	2fc92db641004976273712cdacab3f1416b6f7fcb8a6019bbb6ca539e9effefc.exe	iexplore.exe
PID 652 wrote to memory of 1600	652	2fc92db641004976273712cdacab3f1416b6f7fcb8a6019bbb6ca539e9effefc.exe	iexplore.exe
PID 652 wrote to memory of 1600	652	2fc92db641004976273712cdacab3f1416b6f7fcb8a6019bbb6ca539e9effefc.exe	iexplore.exe
PID 652 wrote to memory of 2860	652	2fc92db641004976273712cdacab3f1416b6f7fcb8a6019bbb6ca539e9effefc.exe	iexplore.exe
PID 652 wrote to memory of 2860	652	2fc92db641004976273712cdacab3f1416b6f7fcb8a6019bbb6ca539e9effefc.exe	iexplore.exe
PID 652 wrote to memory of 2860	652	2fc92db641004976273712cdacab3f1416b6f7fcb8a6019bbb6ca539e9effefc.exe	iexplore.exe
PID 652 wrote to memory of 2860	652	2fc92db641004976273712cdacab3f1416b6f7fcb8a6019bbb6ca539e9effefc.exe	iexplore.exe
PID 652 wrote to memory of 2860	652	2fc92db641004976273712cdacab3f1416b6f7fcb8a6019bbb6ca539e9effefc.exe	iexplore.exe

C:\Users\Admin\AppData\Local\Temp\2fc92db641004976273712cdacab3f1416b6f7fcb8a6019bbb6ca539e9effefc.exe
"C:\Users\Admin\AppData\Local\Temp\2fc92db641004976273712cdacab3f1416b6f7fcb8a6019bbb6ca539e9effefc.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:652
- C:\Program Files (x86)\Internet Explorer\iexplore.exe
  "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:2956
- C:\Program Files (x86)\Internet Explorer\iexplore.exe
  "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
  2⤵
  - Adds Run key to start application
  PID:1960
- C:\Program Files (x86)\Internet Explorer\iexplore.exe
  "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
  2⤵
  PID:1600
- C:\Program Files (x86)\Internet Explorer\iexplore.exe
  "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
  2⤵
  PID:2860

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

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/652-114-0x0000000002470000-0x0000000002471000-memory.dmp

Filesize
4KB

Download
memory/1600-120-0x0000000013C8F890-mapping.dmp

Download
memory/1960-118-0x0000000013C8F890-mapping.dmp

Download
memory/2860-122-0x0000000013C8F890-mapping.dmp

Download
memory/2956-115-0x0000000013140000-0x0000000013CEB000-memory.dmp

Filesize
11.7MB

Download
memory/2956-116-0x0000000013C8F890-mapping.dmp

Download