808f4b73eb26a1a7392d2bb790485d7e8e2506d48cd1b145b3931197510a377b

Analysis

max time kernel
149s
max time network
126s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
09/04/2024, 21:44

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General

Target
21d55388b48e29b01192e692868fb303.exe
Size 332KB
Sample240409-1lw7asch29
SHA256 808f4b73eb26a1a7392d2bb790485d7e8e2506d48cd1b145b3931197510a377b
MD5 21d55388b48e29b01192e692868fb303
SHA1 66cd03508f285237da5969d3aa5c77c1ec5ba848
SHA512 be0abaa9b69fb0b586aa9183e022148956bbb761ff45395dde7ff317187b301aada54dadba4acbbb8058c6d260d2da22921f3c836f691211cd7d382ef47f37a1
SSDEEP 3072:hINzztfivMVMYuFkV3qBnFqOLp4mvy2ACh3gj5z8UPCMgqKR+n:hIVz8YurEmvy2AChOzLCWKR
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

persistence upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2664	svchost.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2144-0-0x0000000000400000-0x000000000042EC51-memory.dmp	upx
behavioral2/files/0x000600000002322b-5.dat	upx
behavioral2/memory/2144-7-0x0000000000400000-0x000000000042EC51-memory.dmp	upx
behavioral2/memory/2664-8-0x0000000000400000-0x000000000042EC51-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Ieuu = "\"C:\\PROGRA~2\\COMMON~1\\SSEMBL~1\\svchost.exe\" -vt yazb"	svchost.exe

Drops file in Program Files directory 5 IoCs

description	ioc	Process
File opened for modification	C:\PROGRA~2\COMMON~1\SSEMBL~1\svchost.exe	svchost.exe
File created	C:\PROGRA~2\COMMON~1\SSEMBL~1\svchost.exe	svchost.exe
File opened for modification	C:\PROGRA~2\COMMON~1\SSEMBL~1\svchost.exe	21d55388b48e29b01192e692868fb303.exe
File created	C:\PROGRA~2\COMMON~1\SSEMBL~1\svchost.exe	21d55388b48e29b01192e692868fb303.exe
File opened for modification	C:\PROGRA~2\COMMON~1\SSEMBL~1\svchost.exe:bla	21d55388b48e29b01192e692868fb303.exe

NTFS ADS 1 IoCs

description	ioc	Process
File opened for modification	C:\PROGRA~2\COMMON~1\SSEMBL~1\svchost.exe:bla	21d55388b48e29b01192e692868fb303.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2144 wrote to memory of 2664	2144	21d55388b48e29b01192e692868fb303.exe	85
PID 2144 wrote to memory of 2664	2144	21d55388b48e29b01192e692868fb303.exe	85
PID 2144 wrote to memory of 2664	2144	21d55388b48e29b01192e692868fb303.exe	85

C:\Users\Admin\AppData\Local\Temp\21d55388b48e29b01192e692868fb303.exe
"C:\Users\Admin\AppData\Local\Temp\21d55388b48e29b01192e692868fb303.exe"
1⤵
- Drops file in Program Files directory
- NTFS ADS
- Suspicious use of WriteProcessMemory
PID:2144
- C:\PROGRA~2\COMMON~1\SSEMBL~1\svchost.exe
  C:\PROGRA~2\COMMON~1\SSEMBL~1\svchost.exe --ru -vt yazb
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in Program Files directory
  PID:2664

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

svchost.exe

Path C:\Program Files (x86)\Common Files\аssembly\svchost.exe
Size 332KB
SHA256 11b143090634ac2c883a80f01e1637871ea04a3793ea5f925e38e07b844978cb
MD5 73c1ef416e11636862a49455814f350c
SHA1 4597578debd6b023a78aff15e5bf7a2cd7211dcb
SHA512 687a411d63866ff871251b955c3926cc18d70dfccb30f357fec680d6ec0ad0378c4cd8141b7bc0813be8818ef07f3857d5d7431a6c7161b73397887424d9adc9
SSDEEP 3072:hINzztfivMVMYuFkV3qBnFqOLp4mvy2ACh3gj5z8UPCMgqKR+n:hIVz8YurEmvy2AChOzLCWKR
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/2144-0-0x0000000000400000-0x000000000042EC51-memory.dmp

Download

memory/2144-7-0x0000000000400000-0x000000000042EC51-memory.dmp

Download

memory/2664-8-0x0000000000400000-0x000000000042EC51-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads