b6e4f89352611004e9f5cf1d57d10c04c1df3e32205d441db29b1167dd68c3d7

General

Target

b6e4f89352611004e9f5cf1d57d10c04c1df3e32205d441db29b1167dd68c3d7.exe
Size

63KB
MD5

ca7e77da33c0ef992a615c2c616b0c9c
SHA1

b28dd70f9b0eab845b801726ab9895b50ac68619
SHA256

b6e4f89352611004e9f5cf1d57d10c04c1df3e32205d441db29b1167dd68c3d7
SHA512

bba0479ab5f7e5300fcb21a7a77a26b1879b62c4e49301bc3b50db58257e95c952ed4aea0d9e2532126cfe239e17147e02694b64519301dbc76ffa1d66985ba7
SSDEEP

1536:454CnhpZeFD4zEcqPD+/2u7mbV5UdH8cQD9++N5X:45LhSD4ziy/2jvUdH8T++N5X

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2796	System64.exe

Modifies Installed Components in the registry 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{7890g421-b1gf-14d0-89bb-0090ce808e85}	b6e4f89352611004e9f5cf1d57d10c04c1df3e32205d441db29b1167dd68c3d7.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{7890g421-b1gf-14d0-89bb-0090ce808e85}\StubPath = "C:\\Windows\\system32\\System64.exe"	b6e4f89352611004e9f5cf1d57d10c04c1df3e32205d441db29b1167dd68c3d7.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	b6e4f89352611004e9f5cf1d57d10c04c1df3e32205d441db29b1167dd68c3d7.exe

Loads dropped DLL 2 IoCs

pid	Process
2796	System64.exe
2796	System64.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\System64.exe	b6e4f89352611004e9f5cf1d57d10c04c1df3e32205d441db29b1167dd68c3d7.exe
File created	C:\Windows\SysWOW64\System64.exe	b6e4f89352611004e9f5cf1d57d10c04c1df3e32205d441db29b1167dd68c3d7.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

pid	Process
2796	System64.exe
2796	System64.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2348 wrote to memory of 2796	2348	b6e4f89352611004e9f5cf1d57d10c04c1df3e32205d441db29b1167dd68c3d7.exe	82
PID 2348 wrote to memory of 2796	2348	b6e4f89352611004e9f5cf1d57d10c04c1df3e32205d441db29b1167dd68c3d7.exe	82
PID 2348 wrote to memory of 2796	2348	b6e4f89352611004e9f5cf1d57d10c04c1df3e32205d441db29b1167dd68c3d7.exe	82
PID 2796 wrote to memory of 308	2796	System64.exe	83
PID 2796 wrote to memory of 308	2796	System64.exe	83
PID 2796 wrote to memory of 308	2796	System64.exe	83

C:\Users\Admin\AppData\Local\Temp\b6e4f89352611004e9f5cf1d57d10c04c1df3e32205d441db29b1167dd68c3d7.exe
"C:\Users\Admin\AppData\Local\Temp\b6e4f89352611004e9f5cf1d57d10c04c1df3e32205d441db29b1167dd68c3d7.exe"
1⤵
- Modifies Installed Components in the registry
- Checks computer location settings
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:2348
- C:\Windows\SysWOW64\System64.exe
  "C:\Windows\system32\System64.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2796
- - C:\Windows\SysWOW64\userinit.exe
    "C:\Windows\system32\userinit.exe"
    3⤵
    PID:308

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

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\System64.exe

Filesize
63KB

MD5
ca7e77da33c0ef992a615c2c616b0c9c

SHA1
b28dd70f9b0eab845b801726ab9895b50ac68619

SHA256
b6e4f89352611004e9f5cf1d57d10c04c1df3e32205d441db29b1167dd68c3d7

SHA512
bba0479ab5f7e5300fcb21a7a77a26b1879b62c4e49301bc3b50db58257e95c952ed4aea0d9e2532126cfe239e17147e02694b64519301dbc76ffa1d66985ba7

Download Submit
C:\Windows\SysWOW64\System64.exe

Filesize
63KB

MD5
ca7e77da33c0ef992a615c2c616b0c9c

SHA1
b28dd70f9b0eab845b801726ab9895b50ac68619

SHA256
b6e4f89352611004e9f5cf1d57d10c04c1df3e32205d441db29b1167dd68c3d7

SHA512
bba0479ab5f7e5300fcb21a7a77a26b1879b62c4e49301bc3b50db58257e95c952ed4aea0d9e2532126cfe239e17147e02694b64519301dbc76ffa1d66985ba7

Download Submit
C:\Windows\SysWOW64\System64.exe

Filesize
63KB

MD5
ca7e77da33c0ef992a615c2c616b0c9c

SHA1
b28dd70f9b0eab845b801726ab9895b50ac68619

SHA256
b6e4f89352611004e9f5cf1d57d10c04c1df3e32205d441db29b1167dd68c3d7

SHA512
bba0479ab5f7e5300fcb21a7a77a26b1879b62c4e49301bc3b50db58257e95c952ed4aea0d9e2532126cfe239e17147e02694b64519301dbc76ffa1d66985ba7

Download Submit
C:\Windows\SysWOW64\System64.exe

Filesize
63KB

MD5
ca7e77da33c0ef992a615c2c616b0c9c

SHA1
b28dd70f9b0eab845b801726ab9895b50ac68619

SHA256
b6e4f89352611004e9f5cf1d57d10c04c1df3e32205d441db29b1167dd68c3d7

SHA512
bba0479ab5f7e5300fcb21a7a77a26b1879b62c4e49301bc3b50db58257e95c952ed4aea0d9e2532126cfe239e17147e02694b64519301dbc76ffa1d66985ba7

Download Submit
memory/2348-132-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/2348-133-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/2348-137-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/2796-138-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/2796-142-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download

Analysis

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