48fd638afdd90873af1e76b1bb8795f633dc684862c453a74a55056734f43e0c

Analysis

max time kernel
149s
max time network
195s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
29/11/2022, 05:54

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General

Target

48fd638afdd90873af1e76b1bb8795f633dc684862c453a74a55056734f43e0c.exe
Size

628KB
MD5

08922375cc15814566a10af3e3ee0500
SHA1

54c653d3ee88bbb0873db3a4c26490bdf9128706
SHA256

48fd638afdd90873af1e76b1bb8795f633dc684862c453a74a55056734f43e0c
SHA512

1f2eb6d7d09489cc5f5cc469841806238406f37dc87b1be70820478d566224374592682f208a6667e306b7a3ca03a7f769f95f9fe44ab36087c76fb84d3f554c
SSDEEP

12288:ON+LbOurqW8AuLexBtRDgNCrrxHeGCcD:NOurqW8AuL8fD4CrrsGCcD

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
900	explorer.exe
1868	explorer.exe

Loads dropped DLL 2 IoCs

pid	Process
1348	48fd638afdd90873af1e76b1bb8795f633dc684862c453a74a55056734f43e0c.exe
1348	48fd638afdd90873af1e76b1bb8795f633dc684862c453a74a55056734f43e0c.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-1-5-21-3406023954-474543476-3319432036-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\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)	\??\S:	explorer.exe
File opened (read-only)	\??\T:	explorer.exe
File opened (read-only)	\??\U:	explorer.exe
File opened (read-only)	\??\W:	explorer.exe
File opened (read-only)	\??\I:	explorer.exe
File opened (read-only)	\??\L:	explorer.exe
File opened (read-only)	\??\O:	explorer.exe
File opened (read-only)	\??\Q:	explorer.exe
File opened (read-only)	\??\X:	explorer.exe
File opened (read-only)	\??\Y:	explorer.exe
File opened (read-only)	\??\F:	explorer.exe
File opened (read-only)	\??\M:	explorer.exe
File opened (read-only)	\??\N:	explorer.exe
File opened (read-only)	\??\P:	explorer.exe
File opened (read-only)	\??\Z:	explorer.exe
File opened (read-only)	\??\E:	explorer.exe
File opened (read-only)	\??\H:	explorer.exe
File opened (read-only)	\??\R:	explorer.exe
File opened (read-only)	\??\V:	explorer.exe
File opened (read-only)	\??\G:	explorer.exe
File opened (read-only)	\??\J:	explorer.exe
File opened (read-only)	\??\K:	explorer.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 956 set thread context of 1348	956	48fd638afdd90873af1e76b1bb8795f633dc684862c453a74a55056734f43e0c.exe	28
PID 900 set thread context of 1868	900	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
956	48fd638afdd90873af1e76b1bb8795f633dc684862c453a74a55056734f43e0c.exe
900	explorer.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 956 wrote to memory of 1348	956	48fd638afdd90873af1e76b1bb8795f633dc684862c453a74a55056734f43e0c.exe	28
PID 956 wrote to memory of 1348	956	48fd638afdd90873af1e76b1bb8795f633dc684862c453a74a55056734f43e0c.exe	28
PID 956 wrote to memory of 1348	956	48fd638afdd90873af1e76b1bb8795f633dc684862c453a74a55056734f43e0c.exe	28
PID 956 wrote to memory of 1348	956	48fd638afdd90873af1e76b1bb8795f633dc684862c453a74a55056734f43e0c.exe	28
PID 956 wrote to memory of 1348	956	48fd638afdd90873af1e76b1bb8795f633dc684862c453a74a55056734f43e0c.exe	28
PID 956 wrote to memory of 1348	956	48fd638afdd90873af1e76b1bb8795f633dc684862c453a74a55056734f43e0c.exe	28
PID 956 wrote to memory of 1348	956	48fd638afdd90873af1e76b1bb8795f633dc684862c453a74a55056734f43e0c.exe	28
PID 956 wrote to memory of 1348	956	48fd638afdd90873af1e76b1bb8795f633dc684862c453a74a55056734f43e0c.exe	28
PID 956 wrote to memory of 1348	956	48fd638afdd90873af1e76b1bb8795f633dc684862c453a74a55056734f43e0c.exe	28
PID 956 wrote to memory of 1348	956	48fd638afdd90873af1e76b1bb8795f633dc684862c453a74a55056734f43e0c.exe	28
PID 956 wrote to memory of 1348	956	48fd638afdd90873af1e76b1bb8795f633dc684862c453a74a55056734f43e0c.exe	28
PID 956 wrote to memory of 1348	956	48fd638afdd90873af1e76b1bb8795f633dc684862c453a74a55056734f43e0c.exe	28
PID 1348 wrote to memory of 900	1348	48fd638afdd90873af1e76b1bb8795f633dc684862c453a74a55056734f43e0c.exe	29
PID 1348 wrote to memory of 900	1348	48fd638afdd90873af1e76b1bb8795f633dc684862c453a74a55056734f43e0c.exe	29
PID 1348 wrote to memory of 900	1348	48fd638afdd90873af1e76b1bb8795f633dc684862c453a74a55056734f43e0c.exe	29
PID 1348 wrote to memory of 900	1348	48fd638afdd90873af1e76b1bb8795f633dc684862c453a74a55056734f43e0c.exe	29
PID 900 wrote to memory of 1868	900	explorer.exe	30
PID 900 wrote to memory of 1868	900	explorer.exe	30
PID 900 wrote to memory of 1868	900	explorer.exe	30
PID 900 wrote to memory of 1868	900	explorer.exe	30
PID 900 wrote to memory of 1868	900	explorer.exe	30
PID 900 wrote to memory of 1868	900	explorer.exe	30
PID 900 wrote to memory of 1868	900	explorer.exe	30
PID 900 wrote to memory of 1868	900	explorer.exe	30
PID 900 wrote to memory of 1868	900	explorer.exe	30
PID 900 wrote to memory of 1868	900	explorer.exe	30
PID 900 wrote to memory of 1868	900	explorer.exe	30
PID 900 wrote to memory of 1868	900	explorer.exe	30

C:\Users\Admin\AppData\Local\Temp\48fd638afdd90873af1e76b1bb8795f633dc684862c453a74a55056734f43e0c.exe
"C:\Users\Admin\AppData\Local\Temp\48fd638afdd90873af1e76b1bb8795f633dc684862c453a74a55056734f43e0c.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:956
- C:\Users\Admin\AppData\Local\Temp\48fd638afdd90873af1e76b1bb8795f633dc684862c453a74a55056734f43e0c.exe
  "C:\Users\Admin\AppData\Local\Temp\48fd638afdd90873af1e76b1bb8795f633dc684862c453a74a55056734f43e0c.exe"
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:1348
- - 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:900
  - - 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:1868

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
628KB

MD5
08922375cc15814566a10af3e3ee0500

SHA1
54c653d3ee88bbb0873db3a4c26490bdf9128706

SHA256
48fd638afdd90873af1e76b1bb8795f633dc684862c453a74a55056734f43e0c

SHA512
1f2eb6d7d09489cc5f5cc469841806238406f37dc87b1be70820478d566224374592682f208a6667e306b7a3ca03a7f769f95f9fe44ab36087c76fb84d3f554c

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

Filesize
628KB

MD5
08922375cc15814566a10af3e3ee0500

SHA1
54c653d3ee88bbb0873db3a4c26490bdf9128706

SHA256
48fd638afdd90873af1e76b1bb8795f633dc684862c453a74a55056734f43e0c

SHA512
1f2eb6d7d09489cc5f5cc469841806238406f37dc87b1be70820478d566224374592682f208a6667e306b7a3ca03a7f769f95f9fe44ab36087c76fb84d3f554c

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

Filesize
628KB

MD5
08922375cc15814566a10af3e3ee0500

SHA1
54c653d3ee88bbb0873db3a4c26490bdf9128706

SHA256
48fd638afdd90873af1e76b1bb8795f633dc684862c453a74a55056734f43e0c

SHA512
1f2eb6d7d09489cc5f5cc469841806238406f37dc87b1be70820478d566224374592682f208a6667e306b7a3ca03a7f769f95f9fe44ab36087c76fb84d3f554c

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

Filesize
628KB

MD5
08922375cc15814566a10af3e3ee0500

SHA1
54c653d3ee88bbb0873db3a4c26490bdf9128706

SHA256
48fd638afdd90873af1e76b1bb8795f633dc684862c453a74a55056734f43e0c

SHA512
1f2eb6d7d09489cc5f5cc469841806238406f37dc87b1be70820478d566224374592682f208a6667e306b7a3ca03a7f769f95f9fe44ab36087c76fb84d3f554c

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

Filesize
628KB

MD5
08922375cc15814566a10af3e3ee0500

SHA1
54c653d3ee88bbb0873db3a4c26490bdf9128706

SHA256
48fd638afdd90873af1e76b1bb8795f633dc684862c453a74a55056734f43e0c

SHA512
1f2eb6d7d09489cc5f5cc469841806238406f37dc87b1be70820478d566224374592682f208a6667e306b7a3ca03a7f769f95f9fe44ab36087c76fb84d3f554c

Download Submit
memory/900-99-0x0000000000400000-0x00000000004A5000-memory.dmp

Filesize
660KB

Download
memory/956-72-0x0000000000400000-0x00000000004A5000-memory.dmp

Filesize
660KB

Download
memory/956-63-0x0000000000400000-0x00000000004A5000-memory.dmp

Filesize
660KB

Download
memory/956-65-0x00000000026A0000-0x0000000002745000-memory.dmp

Filesize
660KB

Download
memory/1348-62-0x0000000011490000-0x00000000114BA000-memory.dmp

Filesize
168KB

Download
memory/1348-79-0x0000000011490000-0x00000000114BA000-memory.dmp

Filesize
168KB

Download
memory/1348-69-0x0000000011490000-0x00000000114BA000-memory.dmp

Filesize
168KB

Download
memory/1348-73-0x0000000075FE1000-0x0000000075FE3000-memory.dmp

Filesize
8KB

Download
memory/1348-74-0x0000000011490000-0x00000000114BA000-memory.dmp

Filesize
168KB

Download
memory/1348-67-0x0000000011490000-0x00000000114BA000-memory.dmp

Filesize
168KB

Download
memory/1348-56-0x0000000011490000-0x00000000114BA000-memory.dmp

Filesize
168KB

Download
memory/1348-64-0x0000000011490000-0x00000000114BA000-memory.dmp

Filesize
168KB

Download
memory/1348-71-0x0000000011490000-0x00000000114BA000-memory.dmp

Filesize
168KB

Download
memory/1348-80-0x0000000000400000-0x00000000004A5000-memory.dmp

Filesize
660KB

Download
memory/1348-57-0x0000000011490000-0x00000000114BA000-memory.dmp

Filesize
168KB

Download
memory/1348-60-0x0000000011490000-0x00000000114BA000-memory.dmp

Filesize
168KB

Download
memory/1348-59-0x0000000011490000-0x00000000114BA000-memory.dmp

Filesize
168KB

Download
memory/1868-101-0x0000000011490000-0x00000000114BA000-memory.dmp

Filesize
168KB

Download
memory/1868-102-0x0000000011490000-0x00000000114BA000-memory.dmp

Filesize
168KB

Download
memory/1868-103-0x0000000011490000-0x00000000114BA000-memory.dmp

Filesize
168KB

Download