767416840053b8f2f1fe455b33af106730a2f9b7bcd5d87f242ff1764ab0bd72

General

Target

767416840053b8f2f1fe455b33af106730a2f9b7bcd5d87f242ff1764ab0bd72.exe
Size

20KB
MD5

64d484c3e02043785fa99412f43802f0
SHA1

18ba08b19d179521841c60178e35fe097ca2eb9c
SHA256

767416840053b8f2f1fe455b33af106730a2f9b7bcd5d87f242ff1764ab0bd72
SHA512

d2abb71f0ba1aeaf36d90fc362c3436b3521fe84d5ee67d721bf889136bcaededc26d5db2a5f5a593f0ce428867d7eb7e52b7b82e51493d4ca6a4b623ba18596
SSDEEP

384:c93q7m/006fdmo4SKOpsviAysG+FpWKvAYtMal:2q7h06BTKOpK5y/+FpWeAYB

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1356	syrmgr.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x00090000000126a2-55.dat	upx
behavioral1/files/0x00090000000126a2-56.dat	upx
behavioral1/files/0x00090000000126a2-58.dat	upx
behavioral1/memory/1368-59-0x0000000000400000-0x0000000000418000-memory.dmp	upx
behavioral1/memory/1356-61-0x0000000000400000-0x0000000000418000-memory.dmp	upx
behavioral1/files/0x00090000000126a2-63.dat	upx
behavioral1/memory/1356-64-0x0000000000400000-0x0000000000418000-memory.dmp	upx

Deletes itself 1 IoCs

pid	Process
1356	syrmgr.exe

Loads dropped DLL 2 IoCs

pid	Process
1368	767416840053b8f2f1fe455b33af106730a2f9b7bcd5d87f242ff1764ab0bd72.exe
1368	767416840053b8f2f1fe455b33af106730a2f9b7bcd5d87f242ff1764ab0bd72.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Microsoft(R) System Manager = "C:\\Windows\\system32\\syrmgr.exe"	767416840053b8f2f1fe455b33af106730a2f9b7bcd5d87f242ff1764ab0bd72.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\msvcrt2.dll	767416840053b8f2f1fe455b33af106730a2f9b7bcd5d87f242ff1764ab0bd72.exe
File created	C:\Windows\SysWOW64\syrmgr.exe	767416840053b8f2f1fe455b33af106730a2f9b7bcd5d87f242ff1764ab0bd72.exe

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 WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1368 wrote to memory of 1356	1368	767416840053b8f2f1fe455b33af106730a2f9b7bcd5d87f242ff1764ab0bd72.exe	27
PID 1368 wrote to memory of 1356	1368	767416840053b8f2f1fe455b33af106730a2f9b7bcd5d87f242ff1764ab0bd72.exe	27
PID 1368 wrote to memory of 1356	1368	767416840053b8f2f1fe455b33af106730a2f9b7bcd5d87f242ff1764ab0bd72.exe	27
PID 1368 wrote to memory of 1356	1368	767416840053b8f2f1fe455b33af106730a2f9b7bcd5d87f242ff1764ab0bd72.exe	27

C:\Users\Admin\AppData\Local\Temp\767416840053b8f2f1fe455b33af106730a2f9b7bcd5d87f242ff1764ab0bd72.exe
"C:\Users\Admin\AppData\Local\Temp\767416840053b8f2f1fe455b33af106730a2f9b7bcd5d87f242ff1764ab0bd72.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:1368
- C:\Windows\SysWOW64\syrmgr.exe
  "C:\Windows\system32\syrmgr.exe" del "C:\Users\Admin\AppData\Local\Temp\767416840053b8f2f1fe455b33af106730a2f9b7bcd5d87f242ff1764ab0bd72.exe"
  2⤵
  - Executes dropped EXE
  - Deletes itself
  PID:1356

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\msvcrt2.dll

Filesize
100KB

MD5
69d4827ce37388eecc7c143ae898574d

SHA1
c00b192910745b57b753c7fbea0ca8b86bda7344

SHA256
1f45611be9dfd3b6185b591c9f5e641a4098709ed170f6b84851c4e69c91d947

SHA512
9c91d14dbf5de2aa8d97b45111289bc2ace751f4b5682e8cd12e193f5e8b28f193cee5232d266a88306ad483126ff30b3c74bdad13911d8ffe9bedbe17471604

Download Submit
C:\Windows\SysWOW64\syrmgr.exe

Filesize
20KB

MD5
64d484c3e02043785fa99412f43802f0

SHA1
18ba08b19d179521841c60178e35fe097ca2eb9c

SHA256
767416840053b8f2f1fe455b33af106730a2f9b7bcd5d87f242ff1764ab0bd72

SHA512
d2abb71f0ba1aeaf36d90fc362c3436b3521fe84d5ee67d721bf889136bcaededc26d5db2a5f5a593f0ce428867d7eb7e52b7b82e51493d4ca6a4b623ba18596

Download Submit
C:\Windows\SysWOW64\syrmgr.exe

Filesize
20KB

MD5
64d484c3e02043785fa99412f43802f0

SHA1
18ba08b19d179521841c60178e35fe097ca2eb9c

SHA256
767416840053b8f2f1fe455b33af106730a2f9b7bcd5d87f242ff1764ab0bd72

SHA512
d2abb71f0ba1aeaf36d90fc362c3436b3521fe84d5ee67d721bf889136bcaededc26d5db2a5f5a593f0ce428867d7eb7e52b7b82e51493d4ca6a4b623ba18596

Download Submit
\Windows\SysWOW64\syrmgr.exe

Filesize
20KB

MD5
64d484c3e02043785fa99412f43802f0

SHA1
18ba08b19d179521841c60178e35fe097ca2eb9c

SHA256
767416840053b8f2f1fe455b33af106730a2f9b7bcd5d87f242ff1764ab0bd72

SHA512
d2abb71f0ba1aeaf36d90fc362c3436b3521fe84d5ee67d721bf889136bcaededc26d5db2a5f5a593f0ce428867d7eb7e52b7b82e51493d4ca6a4b623ba18596

Download Submit
\Windows\SysWOW64\syrmgr.exe

Filesize
20KB

MD5
64d484c3e02043785fa99412f43802f0

SHA1
18ba08b19d179521841c60178e35fe097ca2eb9c

SHA256
767416840053b8f2f1fe455b33af106730a2f9b7bcd5d87f242ff1764ab0bd72

SHA512
d2abb71f0ba1aeaf36d90fc362c3436b3521fe84d5ee67d721bf889136bcaededc26d5db2a5f5a593f0ce428867d7eb7e52b7b82e51493d4ca6a4b623ba18596

Download Submit
memory/1356-61-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/1356-64-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/1368-54-0x0000000075771000-0x0000000075773000-memory.dmp

Filesize
8KB

Download
memory/1368-59-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download

Analysis

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