f41c2bbd455b39892286304d234513c4862e4405eb61038792bbab296d59fc66

Analysis

max time kernel
121s
max time network
144s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
15/10/2023, 19:44

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General

Target

bc675ee293d5978a252b24f14de932e0_exe32.exe
Size

239KB
MD5

bc675ee293d5978a252b24f14de932e0
SHA1

e3fa4486fdceaa06333577dc0f1712a57acdcd70
SHA256

f41c2bbd455b39892286304d234513c4862e4405eb61038792bbab296d59fc66
SHA512

bca2b3661e04375e5819f947eec18d6493cea1952854a1fcf08608626415f7e3da9c366413ebb2f06681bf4b85677cb8d87d104445e59686cbb41ba809898e05
SSDEEP

6144:8pg4rIvq5V8RjeJ3UolYrllUwXd3XrJKRXYUU:8pgNvqV8NA3NyRdNnWYUU

Score

8^/10

persistence

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
2596	eskchkd.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\PROGRA~3\Mozilla\eskchkd.exe	bc675ee293d5978a252b24f14de932e0_exe32.exe
File created	C:\PROGRA~3\Mozilla\iaxspia.dll	eskchkd.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2260	bc675ee293d5978a252b24f14de932e0_exe32.exe
2596	eskchkd.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2208 wrote to memory of 2596	2208	taskeng.exe	31
PID 2208 wrote to memory of 2596	2208	taskeng.exe	31
PID 2208 wrote to memory of 2596	2208	taskeng.exe	31
PID 2208 wrote to memory of 2596	2208	taskeng.exe	31

C:\Users\Admin\AppData\Local\Temp\bc675ee293d5978a252b24f14de932e0_exe32.exe
"C:\Users\Admin\AppData\Local\Temp\bc675ee293d5978a252b24f14de932e0_exe32.exe"
1⤵
- Drops file in Program Files directory
- Suspicious use of UnmapMainImage
PID:2260

C:\Windows\system32\taskeng.exe
taskeng.exe {407B57A0-14C0-48D0-88BA-27807951A332} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:2208
- C:\PROGRA~3\Mozilla\eskchkd.exe
  C:\PROGRA~3\Mozilla\eskchkd.exe -srskkzl
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  - Suspicious use of UnmapMainImage
  PID:2596

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\eskchkd.exe

Filesize
239KB

MD5
9381c48678c4b53a073adac210c06d6f

SHA1
0067db044b7d3fa9c66cd526dcbf053b2fab6b00

SHA256
ec0af61210c6169f7be457cf159d3bb217cd809af41024392965c5f9c4dc87f6

SHA512
a1425e54ef55af9f2c759694244a746bfb4c8e3619a4c1bdba51c16c3f8a0abc712fed692875b8ed50f1465ea9b32bee1c62f0c346895520e8305bfa69d3fcd1

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

Filesize
239KB

MD5
9381c48678c4b53a073adac210c06d6f

SHA1
0067db044b7d3fa9c66cd526dcbf053b2fab6b00

SHA256
ec0af61210c6169f7be457cf159d3bb217cd809af41024392965c5f9c4dc87f6

SHA512
a1425e54ef55af9f2c759694244a746bfb4c8e3619a4c1bdba51c16c3f8a0abc712fed692875b8ed50f1465ea9b32bee1c62f0c346895520e8305bfa69d3fcd1

Download Submit
memory/2260-0-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/2260-1-0x0000000000270000-0x00000000002CB000-memory.dmp

Filesize
364KB

Download
memory/2260-2-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/2260-4-0x0000000000270000-0x00000000002CB000-memory.dmp

Filesize
364KB

Download
memory/2260-5-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/2260-6-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/2596-9-0x0000000000460000-0x00000000004BB000-memory.dmp

Filesize
364KB

Download
memory/2596-10-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/2596-12-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/2596-13-0x0000000000460000-0x00000000004BB000-memory.dmp

Filesize
364KB

Download