1417dda275c79d90d1485bf2580a4b13838a72efcaca3941f3a172f588c4f0e8

Analysis

max time kernel
120s
max time network
124s
platform
windows7_x64
resource
win7-20231025-en
resource tags

arch:x64arch:x86image:win7-20231025-enlocale:en-usos:windows7-x64system
submitted
15-11-2023 07:24

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General

Target

NEAS.de2e996c21aeb7b1e81d1fdf591356b0.exe
Size

365KB
MD5

de2e996c21aeb7b1e81d1fdf591356b0
SHA1

2ec042dd06ce04693808bfc859946094d40d337d
SHA256

1417dda275c79d90d1485bf2580a4b13838a72efcaca3941f3a172f588c4f0e8
SHA512

d6ff93f5d794175d2b34af63ff2770190007f3674939b304a4fc7bdf287303f0c2d3a9494488f2c907cdd6907e31a761b40ec3b62832c2296620dd50a7d13880
SSDEEP

3072:z4w8gTsDAJJRjOuChIRZOzSot3LFZhh2D+0caj3kyRACEM//+9:z4w9JJDIzRn9ozEE+9

Score

8^/10

persistence upx

Malware Config

Signatures

Modifies AppInit DLL entries 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1547.001

Modify Registry
T1112

Executes dropped EXE 1 IoCs

pid	Process
2656	kymnayk.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2428-0-0x0000000000400000-0x000000000045F000-memory.dmp	upx
behavioral1/files/0x000a000000012024-6.dat	upx
behavioral1/files/0x000a000000012024-7.dat	upx

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\PROGRA~3\Mozilla\iuxrktg.dll	kymnayk.exe
File created	C:\PROGRA~3\Mozilla\kymnayk.exe	NEAS.de2e996c21aeb7b1e81d1fdf591356b0.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2428	NEAS.de2e996c21aeb7b1e81d1fdf591356b0.exe
2656	kymnayk.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1744 wrote to memory of 2656	1744	taskeng.exe	29
PID 1744 wrote to memory of 2656	1744	taskeng.exe	29
PID 1744 wrote to memory of 2656	1744	taskeng.exe	29
PID 1744 wrote to memory of 2656	1744	taskeng.exe	29

C:\Users\Admin\AppData\Local\Temp\NEAS.de2e996c21aeb7b1e81d1fdf591356b0.exe
"C:\Users\Admin\AppData\Local\Temp\NEAS.de2e996c21aeb7b1e81d1fdf591356b0.exe"
1⤵
- Drops file in Program Files directory
- Suspicious use of UnmapMainImage
PID:2428

C:\Windows\system32\taskeng.exe
taskeng.exe {D66BD21A-D7B8-4B4B-8234-E871C1AA9EE7} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:1744
- C:\PROGRA~3\Mozilla\kymnayk.exe
  C:\PROGRA~3\Mozilla\kymnayk.exe -dtmxjcd
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  - Suspicious use of UnmapMainImage
  PID:2656

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

Replay Monitor

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Downloads

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

Filesize
365KB

MD5
52b1382536e463c92b28c607bc37d1f2

SHA1
684a31dfd490d0f84d70a2f16a3c4345cbd80d88

SHA256
af95ebd1a2c301233419e3a77e4a5ac23ecf81b6cdc6c732d91972066ef7bca9

SHA512
a43d52cf3f1b837067916406257e9d7fad4eed72aec0a0e6dadf8b79e00df08dd312978e820bc59496e8757ca2e101b49e5d01e01d2e580be77d81e04694ce53

Download Submit
C:\PROGRA~3\Mozilla\kymnayk.exe

Filesize
365KB

MD5
52b1382536e463c92b28c607bc37d1f2

SHA1
684a31dfd490d0f84d70a2f16a3c4345cbd80d88

SHA256
af95ebd1a2c301233419e3a77e4a5ac23ecf81b6cdc6c732d91972066ef7bca9

SHA512
a43d52cf3f1b837067916406257e9d7fad4eed72aec0a0e6dadf8b79e00df08dd312978e820bc59496e8757ca2e101b49e5d01e01d2e580be77d81e04694ce53

Download Submit
memory/2428-0-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/2428-1-0x0000000000340000-0x000000000039B000-memory.dmp

Filesize
364KB

Download
memory/2428-2-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/2428-4-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/2428-5-0x0000000000340000-0x000000000039B000-memory.dmp

Filesize
364KB

Download
memory/2656-8-0x00000000003A0000-0x00000000003FB000-memory.dmp

Filesize
364KB

Download
memory/2656-9-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/2656-11-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/2656-12-0x00000000003A0000-0x00000000003FB000-memory.dmp

Filesize
364KB

Download