f9d9d00a974b259b747217d021d95c7902c8a8807539db0bbf43939be972e281

Analysis

max time kernel
147s
max time network
151s
platform
windows10_x64
resource
win10v20210410
submitted
16-07-2021 17:35

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General

Target

58c6424d1d5365f3b596c311f77bf1635a84ecab176a829418ca2076974e91ed.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
behavioral6/memory/3888-115-0x0000000013140000-0x0000000013CEB000-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-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\bvigmcfojkhwsarhxkoc = "C:\\Users\\Admin\\AppData\\Roaming\\bvigmcfojkhwsarhxkoc\\bvigmcfojkhwsarhxkoc.exe"	iexplore.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

58c6424d1d5365f3b596c311f77bf1635a84ecab176a829418ca2076974e91ed.exe

description	pid	process	target process
PID 3968 set thread context of 3888	3968	58c6424d1d5365f3b596c311f77bf1635a84ecab176a829418ca2076974e91ed.exe	iexplore.exe
PID 3968 set thread context of 3712	3968	58c6424d1d5365f3b596c311f77bf1635a84ecab176a829418ca2076974e91ed.exe	iexplore.exe
PID 3968 set thread context of 700	3968	58c6424d1d5365f3b596c311f77bf1635a84ecab176a829418ca2076974e91ed.exe	iexplore.exe
PID 3968 set thread context of 2008	3968	58c6424d1d5365f3b596c311f77bf1635a84ecab176a829418ca2076974e91ed.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

3888 iexplore.exe
3888 iexplore.exe

pid	process
3888	iexplore.exe
3888	iexplore.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

58c6424d1d5365f3b596c311f77bf1635a84ecab176a829418ca2076974e91ed.exe

description	pid	process	target process
PID 3968 wrote to memory of 3888	3968	58c6424d1d5365f3b596c311f77bf1635a84ecab176a829418ca2076974e91ed.exe	iexplore.exe
PID 3968 wrote to memory of 3888	3968	58c6424d1d5365f3b596c311f77bf1635a84ecab176a829418ca2076974e91ed.exe	iexplore.exe
PID 3968 wrote to memory of 3888	3968	58c6424d1d5365f3b596c311f77bf1635a84ecab176a829418ca2076974e91ed.exe	iexplore.exe
PID 3968 wrote to memory of 3888	3968	58c6424d1d5365f3b596c311f77bf1635a84ecab176a829418ca2076974e91ed.exe	iexplore.exe
PID 3968 wrote to memory of 3888	3968	58c6424d1d5365f3b596c311f77bf1635a84ecab176a829418ca2076974e91ed.exe	iexplore.exe
PID 3968 wrote to memory of 3712	3968	58c6424d1d5365f3b596c311f77bf1635a84ecab176a829418ca2076974e91ed.exe	iexplore.exe
PID 3968 wrote to memory of 3712	3968	58c6424d1d5365f3b596c311f77bf1635a84ecab176a829418ca2076974e91ed.exe	iexplore.exe
PID 3968 wrote to memory of 3712	3968	58c6424d1d5365f3b596c311f77bf1635a84ecab176a829418ca2076974e91ed.exe	iexplore.exe
PID 3968 wrote to memory of 3712	3968	58c6424d1d5365f3b596c311f77bf1635a84ecab176a829418ca2076974e91ed.exe	iexplore.exe
PID 3968 wrote to memory of 3712	3968	58c6424d1d5365f3b596c311f77bf1635a84ecab176a829418ca2076974e91ed.exe	iexplore.exe
PID 3968 wrote to memory of 700	3968	58c6424d1d5365f3b596c311f77bf1635a84ecab176a829418ca2076974e91ed.exe	iexplore.exe
PID 3968 wrote to memory of 700	3968	58c6424d1d5365f3b596c311f77bf1635a84ecab176a829418ca2076974e91ed.exe	iexplore.exe
PID 3968 wrote to memory of 700	3968	58c6424d1d5365f3b596c311f77bf1635a84ecab176a829418ca2076974e91ed.exe	iexplore.exe
PID 3968 wrote to memory of 700	3968	58c6424d1d5365f3b596c311f77bf1635a84ecab176a829418ca2076974e91ed.exe	iexplore.exe
PID 3968 wrote to memory of 700	3968	58c6424d1d5365f3b596c311f77bf1635a84ecab176a829418ca2076974e91ed.exe	iexplore.exe
PID 3968 wrote to memory of 2008	3968	58c6424d1d5365f3b596c311f77bf1635a84ecab176a829418ca2076974e91ed.exe	iexplore.exe
PID 3968 wrote to memory of 2008	3968	58c6424d1d5365f3b596c311f77bf1635a84ecab176a829418ca2076974e91ed.exe	iexplore.exe
PID 3968 wrote to memory of 2008	3968	58c6424d1d5365f3b596c311f77bf1635a84ecab176a829418ca2076974e91ed.exe	iexplore.exe
PID 3968 wrote to memory of 2008	3968	58c6424d1d5365f3b596c311f77bf1635a84ecab176a829418ca2076974e91ed.exe	iexplore.exe
PID 3968 wrote to memory of 2008	3968	58c6424d1d5365f3b596c311f77bf1635a84ecab176a829418ca2076974e91ed.exe	iexplore.exe

C:\Users\Admin\AppData\Local\Temp\58c6424d1d5365f3b596c311f77bf1635a84ecab176a829418ca2076974e91ed.exe
"C:\Users\Admin\AppData\Local\Temp\58c6424d1d5365f3b596c311f77bf1635a84ecab176a829418ca2076974e91ed.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3968
- C:\Program Files (x86)\Internet Explorer\iexplore.exe
  "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:3888
- C:\Program Files (x86)\Internet Explorer\iexplore.exe
  "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
  2⤵
  - Adds Run key to start application
  PID:3712
- C:\Program Files (x86)\Internet Explorer\iexplore.exe
  "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
  2⤵
  PID:700
- C:\Program Files (x86)\Internet Explorer\iexplore.exe
  "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
  2⤵
  PID:2008

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/700-120-0x0000000013C8F890-mapping.dmp

Download
memory/2008-122-0x0000000013C8F890-mapping.dmp

Download
memory/3712-118-0x0000000013C8F890-mapping.dmp

Download
memory/3888-115-0x0000000013140000-0x0000000013CEB000-memory.dmp

Filesize
11.7MB

Download
memory/3888-116-0x0000000013C8F890-mapping.dmp

Download
memory/3968-114-0x00000000005A0000-0x000000000064E000-memory.dmp

Filesize
696KB

Download