f999d5bc26352386472f45323b75bbe4beee2a2a4b8efa1abe538d12218aecfe

Analysis

max time kernel
117s
max time network
119s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
06/08/2024, 17:59

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General

Target

d5ada372e0535645411994963a3e8330N.exe
Size

448KB
MD5

d5ada372e0535645411994963a3e8330
SHA1

d9dc76fcbb94958213c45ff3dd3e2bc703b18a7c
SHA256

f999d5bc26352386472f45323b75bbe4beee2a2a4b8efa1abe538d12218aecfe
SHA512

baff4406e1301cf7625c5c0e710d9652e8d8b29e652a5888849cb8c3573cb00034efd927aec8591fc887a8d742c20cb5ae57191de82a5465f42ba702df99d75d
SSDEEP

6144:i4/LuS+WcPmKmsEsY9RqSs3JqyiZdMFKr:PL25msWs3AD

Score

8^/10

discovery persistence privilege_escalation upx

Malware Config

Signatures

Event Triggered Execution: AppInit DLLs 1 TTPs
Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.
persistence privilege_escalation

AppInit DLLs
T1546.010

Executes dropped EXE 1 IoCs

pid	Process
2684	yofzeuh.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x00360000000160e7-5.dat	upx
behavioral1/memory/2684-7-0x0000000000400000-0x0000000000470000-memory.dmp	upx

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\PROGRA~3\Mozilla\yofzeuh.exe	d5ada372e0535645411994963a3e8330N.exe
File created	C:\PROGRA~3\Mozilla\mkkxkvk.dll	yofzeuh.exe

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d5ada372e0535645411994963a3e8330N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	yofzeuh.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
3020	d5ada372e0535645411994963a3e8330N.exe
2684	yofzeuh.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2776 wrote to memory of 2684	2776	taskeng.exe	31
PID 2776 wrote to memory of 2684	2776	taskeng.exe	31
PID 2776 wrote to memory of 2684	2776	taskeng.exe	31
PID 2776 wrote to memory of 2684	2776	taskeng.exe	31

C:\Users\Admin\AppData\Local\Temp\d5ada372e0535645411994963a3e8330N.exe
"C:\Users\Admin\AppData\Local\Temp\d5ada372e0535645411994963a3e8330N.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of UnmapMainImage
PID:3020

C:\Windows\system32\taskeng.exe
taskeng.exe {D5B151A8-2DE5-49EF-9C20-E84A4C495A27} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:2776
- C:\PROGRA~3\Mozilla\yofzeuh.exe
  C:\PROGRA~3\Mozilla\yofzeuh.exe -qmgjyzc
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of UnmapMainImage
  PID:2684

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

T1546

AppInit DLLs

T1546.010

Privilege Escalation

Event Triggered Execution

T1546

AppInit DLLs

T1546.010

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\PROGRA~3\Mozilla\yofzeuh.exe

Filesize
448KB

MD5
63f242ca07dc02aad9f79580243b93d7

SHA1
8d5406abf6d69991dedc770efbf612cbc699996c

SHA256
1f829d2e14cc3f4d45f8f1a4e4632990d0b05e09bfb45d560884e24d983953c8

SHA512
4c70c1c9759a0f3e94104aed2f22f0d5bd388efb954e0c56d04ff9c870bb17bdea6c115ce5246ba0e8ad81e01d2dc7f74028837719505fcc0c8c04a7052475fb

Download Submit
memory/2684-7-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/2684-8-0x00000000003A0000-0x00000000003FB000-memory.dmp

Filesize
364KB

Download
memory/2684-9-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/2684-11-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/3020-2-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/3020-1-0x0000000000600000-0x000000000065B000-memory.dmp

Filesize
364KB

Download
memory/3020-0-0x0000000000400000-0x0000000000470000-memory.dmp

Filesize
448KB

Download
memory/3020-4-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download