901f7535a6a8b84cd9f14c845117a18413665659d1677bf9d5812c06f0bfdce9

Analysis

max time kernel
144s
max time network
166s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
04/12/2022, 00:32

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General

Target

901f7535a6a8b84cd9f14c845117a18413665659d1677bf9d5812c06f0bfdce9.exe
Size

700KB
MD5

3aad2965a01f273112c501888feeac4a
SHA1

a06a1fc0c73e226553923946dee42b5b7a90b304
SHA256

901f7535a6a8b84cd9f14c845117a18413665659d1677bf9d5812c06f0bfdce9
SHA512

0eddeb11374f39105e88d91a07b1501ef09b06f47d0718776e06affff0fc39630ff1a5b0ab1882b4c83bb3a93a26eac07f92ff495fbb98c4f255c823137524e0
SSDEEP

12288:AN+LbOurqW8AuLexBtRDgNCrrxHeGCcbLx:HOurqW8AuL8fD4CrrsGCcx

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
1792	explorer.exe
1172	explorer.exe

Loads dropped DLL 2 IoCs

pid	Process
1508	901f7535a6a8b84cd9f14c845117a18413665659d1677bf9d5812c06f0bfdce9.exe
1508	901f7535a6a8b84cd9f14c845117a18413665659d1677bf9d5812c06f0bfdce9.exe

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\USER\S-1-5-21-3845472200-3839195424-595303356-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\explorer.exe = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\explorer.exe"	explorer.exe

Enumerates connected drives 3 TTPs 22 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\O:	explorer.exe
File opened (read-only)	\??\U:	explorer.exe
File opened (read-only)	\??\G:	explorer.exe
File opened (read-only)	\??\H:	explorer.exe
File opened (read-only)	\??\K:	explorer.exe
File opened (read-only)	\??\M:	explorer.exe
File opened (read-only)	\??\N:	explorer.exe
File opened (read-only)	\??\T:	explorer.exe
File opened (read-only)	\??\Z:	explorer.exe
File opened (read-only)	\??\F:	explorer.exe
File opened (read-only)	\??\I:	explorer.exe
File opened (read-only)	\??\J:	explorer.exe
File opened (read-only)	\??\L:	explorer.exe
File opened (read-only)	\??\P:	explorer.exe
File opened (read-only)	\??\X:	explorer.exe
File opened (read-only)	\??\E:	explorer.exe
File opened (read-only)	\??\Q:	explorer.exe
File opened (read-only)	\??\R:	explorer.exe
File opened (read-only)	\??\V:	explorer.exe
File opened (read-only)	\??\W:	explorer.exe
File opened (read-only)	\??\S:	explorer.exe
File opened (read-only)	\??\Y:	explorer.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 948 set thread context of 1508	948	901f7535a6a8b84cd9f14c845117a18413665659d1677bf9d5812c06f0bfdce9.exe	28
PID 1792 set thread context of 1172	1792	explorer.exe	30

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 SetWindowsHookEx 2 IoCs

pid	Process
948	901f7535a6a8b84cd9f14c845117a18413665659d1677bf9d5812c06f0bfdce9.exe
1792	explorer.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 948 wrote to memory of 1508	948	901f7535a6a8b84cd9f14c845117a18413665659d1677bf9d5812c06f0bfdce9.exe	28
PID 948 wrote to memory of 1508	948	901f7535a6a8b84cd9f14c845117a18413665659d1677bf9d5812c06f0bfdce9.exe	28
PID 948 wrote to memory of 1508	948	901f7535a6a8b84cd9f14c845117a18413665659d1677bf9d5812c06f0bfdce9.exe	28
PID 948 wrote to memory of 1508	948	901f7535a6a8b84cd9f14c845117a18413665659d1677bf9d5812c06f0bfdce9.exe	28
PID 948 wrote to memory of 1508	948	901f7535a6a8b84cd9f14c845117a18413665659d1677bf9d5812c06f0bfdce9.exe	28
PID 948 wrote to memory of 1508	948	901f7535a6a8b84cd9f14c845117a18413665659d1677bf9d5812c06f0bfdce9.exe	28
PID 948 wrote to memory of 1508	948	901f7535a6a8b84cd9f14c845117a18413665659d1677bf9d5812c06f0bfdce9.exe	28
PID 948 wrote to memory of 1508	948	901f7535a6a8b84cd9f14c845117a18413665659d1677bf9d5812c06f0bfdce9.exe	28
PID 948 wrote to memory of 1508	948	901f7535a6a8b84cd9f14c845117a18413665659d1677bf9d5812c06f0bfdce9.exe	28
PID 948 wrote to memory of 1508	948	901f7535a6a8b84cd9f14c845117a18413665659d1677bf9d5812c06f0bfdce9.exe	28
PID 948 wrote to memory of 1508	948	901f7535a6a8b84cd9f14c845117a18413665659d1677bf9d5812c06f0bfdce9.exe	28
PID 948 wrote to memory of 1508	948	901f7535a6a8b84cd9f14c845117a18413665659d1677bf9d5812c06f0bfdce9.exe	28
PID 1508 wrote to memory of 1792	1508	901f7535a6a8b84cd9f14c845117a18413665659d1677bf9d5812c06f0bfdce9.exe	29
PID 1508 wrote to memory of 1792	1508	901f7535a6a8b84cd9f14c845117a18413665659d1677bf9d5812c06f0bfdce9.exe	29
PID 1508 wrote to memory of 1792	1508	901f7535a6a8b84cd9f14c845117a18413665659d1677bf9d5812c06f0bfdce9.exe	29
PID 1508 wrote to memory of 1792	1508	901f7535a6a8b84cd9f14c845117a18413665659d1677bf9d5812c06f0bfdce9.exe	29
PID 1792 wrote to memory of 1172	1792	explorer.exe	30
PID 1792 wrote to memory of 1172	1792	explorer.exe	30
PID 1792 wrote to memory of 1172	1792	explorer.exe	30
PID 1792 wrote to memory of 1172	1792	explorer.exe	30
PID 1792 wrote to memory of 1172	1792	explorer.exe	30
PID 1792 wrote to memory of 1172	1792	explorer.exe	30
PID 1792 wrote to memory of 1172	1792	explorer.exe	30
PID 1792 wrote to memory of 1172	1792	explorer.exe	30
PID 1792 wrote to memory of 1172	1792	explorer.exe	30
PID 1792 wrote to memory of 1172	1792	explorer.exe	30
PID 1792 wrote to memory of 1172	1792	explorer.exe	30
PID 1792 wrote to memory of 1172	1792	explorer.exe	30

C:\Users\Admin\AppData\Local\Temp\901f7535a6a8b84cd9f14c845117a18413665659d1677bf9d5812c06f0bfdce9.exe
"C:\Users\Admin\AppData\Local\Temp\901f7535a6a8b84cd9f14c845117a18413665659d1677bf9d5812c06f0bfdce9.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:948
- C:\Users\Admin\AppData\Local\Temp\901f7535a6a8b84cd9f14c845117a18413665659d1677bf9d5812c06f0bfdce9.exe
  "C:\Users\Admin\AppData\Local\Temp\901f7535a6a8b84cd9f14c845117a18413665659d1677bf9d5812c06f0bfdce9.exe"
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:1508
- - C:\Users\Admin\AppData\Roaming\Microsoft\explorer.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\explorer.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1792
  - - C:\Users\Admin\AppData\Roaming\Microsoft\explorer.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\explorer.exe"
      4⤵
      Executes dropped EXE
      Adds Run key to start application
      Enumerates connected drives
      PID:1172

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

C:\Users\Admin\AppData\Roaming\Microsoft\explorer.exe

Filesize
700KB

MD5
3aad2965a01f273112c501888feeac4a

SHA1
a06a1fc0c73e226553923946dee42b5b7a90b304

SHA256
901f7535a6a8b84cd9f14c845117a18413665659d1677bf9d5812c06f0bfdce9

SHA512
0eddeb11374f39105e88d91a07b1501ef09b06f47d0718776e06affff0fc39630ff1a5b0ab1882b4c83bb3a93a26eac07f92ff495fbb98c4f255c823137524e0

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\explorer.exe

Filesize
700KB

MD5
3aad2965a01f273112c501888feeac4a

SHA1
a06a1fc0c73e226553923946dee42b5b7a90b304

SHA256
901f7535a6a8b84cd9f14c845117a18413665659d1677bf9d5812c06f0bfdce9

SHA512
0eddeb11374f39105e88d91a07b1501ef09b06f47d0718776e06affff0fc39630ff1a5b0ab1882b4c83bb3a93a26eac07f92ff495fbb98c4f255c823137524e0

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\explorer.exe

Filesize
700KB

MD5
3aad2965a01f273112c501888feeac4a

SHA1
a06a1fc0c73e226553923946dee42b5b7a90b304

SHA256
901f7535a6a8b84cd9f14c845117a18413665659d1677bf9d5812c06f0bfdce9

SHA512
0eddeb11374f39105e88d91a07b1501ef09b06f47d0718776e06affff0fc39630ff1a5b0ab1882b4c83bb3a93a26eac07f92ff495fbb98c4f255c823137524e0

Download Submit
\Users\Admin\AppData\Roaming\Microsoft\explorer.exe

Filesize
700KB

MD5
3aad2965a01f273112c501888feeac4a

SHA1
a06a1fc0c73e226553923946dee42b5b7a90b304

SHA256
901f7535a6a8b84cd9f14c845117a18413665659d1677bf9d5812c06f0bfdce9

SHA512
0eddeb11374f39105e88d91a07b1501ef09b06f47d0718776e06affff0fc39630ff1a5b0ab1882b4c83bb3a93a26eac07f92ff495fbb98c4f255c823137524e0

Download Submit
\Users\Admin\AppData\Roaming\Microsoft\explorer.exe

Filesize
700KB

MD5
3aad2965a01f273112c501888feeac4a

SHA1
a06a1fc0c73e226553923946dee42b5b7a90b304

SHA256
901f7535a6a8b84cd9f14c845117a18413665659d1677bf9d5812c06f0bfdce9

SHA512
0eddeb11374f39105e88d91a07b1501ef09b06f47d0718776e06affff0fc39630ff1a5b0ab1882b4c83bb3a93a26eac07f92ff495fbb98c4f255c823137524e0

Download Submit
memory/948-54-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download
memory/948-71-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download
memory/1172-101-0x0000000011490000-0x00000000114BA000-memory.dmp

Filesize
168KB

Download
memory/1172-100-0x0000000011490000-0x00000000114BA000-memory.dmp

Filesize
168KB

Download
memory/1172-99-0x0000000011490000-0x00000000114BA000-memory.dmp

Filesize
168KB

Download
memory/1508-72-0x0000000075DA1000-0x0000000075DA3000-memory.dmp

Filesize
8KB

Download
memory/1508-78-0x0000000011490000-0x00000000114BA000-memory.dmp

Filesize
168KB

Download
memory/1508-73-0x0000000011490000-0x00000000114BA000-memory.dmp

Filesize
168KB

Download
memory/1508-68-0x0000000011490000-0x00000000114BA000-memory.dmp

Filesize
168KB

Download
memory/1508-57-0x0000000011490000-0x00000000114BA000-memory.dmp

Filesize
168KB

Download
memory/1508-66-0x0000000011490000-0x00000000114BA000-memory.dmp

Filesize
168KB

Download
memory/1508-70-0x0000000011490000-0x00000000114BA000-memory.dmp

Filesize
168KB

Download
memory/1508-64-0x0000000011490000-0x00000000114BA000-memory.dmp

Filesize
168KB

Download
memory/1508-63-0x0000000011490000-0x00000000114BA000-memory.dmp

Filesize
168KB

Download
memory/1508-61-0x0000000011490000-0x00000000114BA000-memory.dmp

Filesize
168KB

Download
memory/1508-58-0x0000000011490000-0x00000000114BA000-memory.dmp

Filesize
168KB

Download
memory/1508-60-0x0000000011490000-0x00000000114BA000-memory.dmp

Filesize
168KB

Download
memory/1792-97-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download