652a52e60e4dc10525ed86389b8fe17d13de9067ee395dac345356361839935e

Analysis

max time kernel
146s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
19/01/2024, 15:48

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General

Target

68045b7877a9b9a04086754c61af21fd.exe
Size

16KB
MD5

68045b7877a9b9a04086754c61af21fd
SHA1

85b1fc6ed2e3c44976548cd73f1033e0466057c4
SHA256

652a52e60e4dc10525ed86389b8fe17d13de9067ee395dac345356361839935e
SHA512

3650fd8b77b265fbb4c16cd3b38bdf5e9ac6fecfc800b2b974c08c5ca3df47fd3d9e8829823ffd2441869cc16d38c1b15eb3f4bbcb01698ed27b2bdb7f063394
SSDEEP

192:1T20Zfmm/pEgyHwLNrAwVPn+mzFdcILhE/MQY7P3rGA6zqhVHBRSY:1GCa8pP+yHHLhE0N3aA6zqhfp

Score

7^/10

persistence

Malware Config

Signatures

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-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\International\Geo\Nation	68045b7877a9b9a04086754c61af21fd.exe

Executes dropped EXE 2 IoCs

pid	Process
3552	antigen.exe
4436	sysmail.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\System mail = "0"	sysmail.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\System mail = "0"	sysmail.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\sysmail.exe	68045b7877a9b9a04086754c61af21fd.exe
File created	C:\Windows\sysmail.exe	68045b7877a9b9a04086754c61af21fd.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4436	sysmail.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2476 wrote to memory of 3552	2476	68045b7877a9b9a04086754c61af21fd.exe	88
PID 2476 wrote to memory of 3552	2476	68045b7877a9b9a04086754c61af21fd.exe	88
PID 2476 wrote to memory of 3552	2476	68045b7877a9b9a04086754c61af21fd.exe	88
PID 2476 wrote to memory of 4436	2476	68045b7877a9b9a04086754c61af21fd.exe	89
PID 2476 wrote to memory of 4436	2476	68045b7877a9b9a04086754c61af21fd.exe	89
PID 2476 wrote to memory of 4436	2476	68045b7877a9b9a04086754c61af21fd.exe	89

C:\Users\Admin\AppData\Local\Temp\68045b7877a9b9a04086754c61af21fd.exe
"C:\Users\Admin\AppData\Local\Temp\68045b7877a9b9a04086754c61af21fd.exe"
1⤵
- Checks computer location settings
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2476
- C:\Users\Admin\AppData\Local\Temp\antigen.exe
  "C:\Users\Admin\AppData\Local\Temp\antigen.exe"
  2⤵
  - Executes dropped EXE
  PID:3552
- C:\Windows\sysmail.exe
  "C:\Windows\sysmail.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of SetWindowsHookEx
  PID:4436

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\antigen.exe

Filesize
3KB

MD5
8aa82f1cf2be17479bb20a77cef6d749

SHA1
fcba93f838108eb257a1e4c90de2b904f9be9062

SHA256
df3a8fe44621252fa75caf8b7d2e3fd341d51a27fdf2969779ecdf70e13a1338

SHA512
72ea22c414f45d476261db516d4d1caa77d26fd011554e15fd13d8fb501b6d65e60c6ba003d69f1ca8214b7ec5c41599bc4b8ca7e77e34be3433fefa9c8be68d

Download Submit
C:\Windows\sysmail.exe

Filesize
13KB

MD5
8234539bae3357cb503f92d9e3603da9

SHA1
62c108c1a21fdc0e75d609eeffe7da7b3e2e54aa

SHA256
3ee00a08b2fd684d33b4047542b1898fd03ea74a53441d7b6e7b6cc074495622

SHA512
222713b07f4712373e90ac1cf7ccb95b302e00ad737f85c7378262c907a81a3c4379695150752e3b05d53e1d14906f3eba04313d171a3918a2f98eb16c5c421f

Download Submit
memory/2476-0-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/2476-19-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/4436-18-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/4436-20-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/4436-22-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/4436-24-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/4436-26-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/4436-28-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/4436-30-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/4436-32-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads