20bbe829dc628e106797958b422d4ebacd29066b6fd5418930a7e42a57546338

Analysis

max time kernel
116s
max time network
122s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
02/12/2022, 23:13

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General

Target

20bbe829dc628e106797958b422d4ebacd29066b6fd5418930a7e42a57546338.dll
Size

96KB
MD5

fc7aa0c1358943f14607b788b2ea7540
SHA1

444ff4c70318d2ed8a5c6a83dd550cf13eac0653
SHA256

20bbe829dc628e106797958b422d4ebacd29066b6fd5418930a7e42a57546338
SHA512

caf5780636ea62fbbb76fa19429bab488b61590f130fe6607082bdf05a3c569819ccd2c05720208d54f4d5a974fe5b9d767a81a432f3f52ab52a1ac551969d9a
SSDEEP

768:EnKl2XOz3sCu+/h29vOYXOhYFtDJOgpg5Rd5WtXhG2yg0rvLp8N:EnKl2oOOYXTFtTCh5Yk2y3jp8N

Score

8^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
320	instsp2.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000a00000001273e-57.dat	upx
behavioral1/memory/320-61-0x00000000003E0000-0x000000000040C000-memory.dmp	upx
behavioral1/files/0x000a00000001273e-64.dat	upx

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\instsp2.exe	rundll32.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 1 IoCs

pid	Process
1272	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	320	instsp2.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1984 wrote to memory of 1272	1984	rundll32.exe	28
PID 1984 wrote to memory of 1272	1984	rundll32.exe	28
PID 1984 wrote to memory of 1272	1984	rundll32.exe	28
PID 1984 wrote to memory of 1272	1984	rundll32.exe	28
PID 1984 wrote to memory of 1272	1984	rundll32.exe	28
PID 1984 wrote to memory of 1272	1984	rundll32.exe	28
PID 1984 wrote to memory of 1272	1984	rundll32.exe	28
PID 1272 wrote to memory of 320	1272	rundll32.exe	29
PID 1272 wrote to memory of 320	1272	rundll32.exe	29
PID 1272 wrote to memory of 320	1272	rundll32.exe	29
PID 1272 wrote to memory of 320	1272	rundll32.exe	29
PID 320 wrote to memory of 1704	320	instsp2.exe	37
PID 320 wrote to memory of 1704	320	instsp2.exe	37
PID 320 wrote to memory of 1704	320	instsp2.exe	37
PID 320 wrote to memory of 1704	320	instsp2.exe	37

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\20bbe829dc628e106797958b422d4ebacd29066b6fd5418930a7e42a57546338.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1984
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\20bbe829dc628e106797958b422d4ebacd29066b6fd5418930a7e42a57546338.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1272
- - C:\Windows\instsp2.exe
    C:\Windows\instsp2.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:320
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c del C:\Windows\instsp2.exe > nul
      4⤵
      PID:1704

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\instsp2.exe

Filesize
9KB

MD5
c0a73a33bc9b336e8fa0ea0c9f501b38

SHA1
d7dbcd51bd10039303bc993bd582a4bbd29f8904

SHA256
fcea9a342f04acae421a4bc59037a8e73b19cc91614ebb08613dfac2f3bc7f14

SHA512
6a313be1141f377f15d6765f88f4650fa721982c07f169124a0633fe1c94d4b72e5b66adc9b62d7037f13d8bb54801606f89ae052a6d1e7b6bd6b2674304e859

Download Submit
C:\Windows\instsp2.exe

Filesize
9KB

MD5
c0a73a33bc9b336e8fa0ea0c9f501b38

SHA1
d7dbcd51bd10039303bc993bd582a4bbd29f8904

SHA256
fcea9a342f04acae421a4bc59037a8e73b19cc91614ebb08613dfac2f3bc7f14

SHA512
6a313be1141f377f15d6765f88f4650fa721982c07f169124a0633fe1c94d4b72e5b66adc9b62d7037f13d8bb54801606f89ae052a6d1e7b6bd6b2674304e859

Download Submit
memory/320-61-0x00000000003E0000-0x000000000040C000-memory.dmp

Filesize
176KB

Download
memory/1272-55-0x0000000076651000-0x0000000076653000-memory.dmp

Filesize
8KB

Download
memory/1272-60-0x0000000000230000-0x000000000025C000-memory.dmp

Filesize
176KB

Download
memory/1272-59-0x0000000000230000-0x000000000025C000-memory.dmp

Filesize
176KB

Download
memory/1272-62-0x0000000000230000-0x000000000025C000-memory.dmp

Filesize
176KB

Download