c25d53b46bb85b9b81f140617cad54bba438e64072f5653bc85b62083306a7b1

Analysis

max time kernel
92s
max time network
123s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
27-03-2024 17:25

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General

Target

e232399ba45ac62a06158ea55e764769.exe
Size

1.2MB
MD5

e232399ba45ac62a06158ea55e764769
SHA1

953aea3af528492fa0464ee6a198a969fe2ef9a7
SHA256

c25d53b46bb85b9b81f140617cad54bba438e64072f5653bc85b62083306a7b1
SHA512

36c80858c0ac66d09bf2428eba92d17cc862cfe81a90465931711333981f3333425d2767350c246fddf4cb9f7eb65cc7c7b5952951094b697ad8210beda9eed1
SSDEEP

24576:IoqJ4jpebQRLI/bwKlVYswxTI95QnyOujfJzTKUckm8O3bb:IoqJ4jpsQkwKlFwxU95QnyOujrcGW

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
5048	install_msgskinner.exe

Loads dropped DLL 2 IoCs

pid	Process
5048	install_msgskinner.exe
5048	install_msgskinner.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\pack.epk	e232399ba45ac62a06158ea55e764769.exe

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

System Information Discovery
T1082

NSIS installer 1 IoCs

installer

resource	yara_rule
behavioral2/files/0x00070000000231e1-10.dat	nsis_installer_1

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4372 wrote to memory of 5048	4372	e232399ba45ac62a06158ea55e764769.exe	85
PID 4372 wrote to memory of 5048	4372	e232399ba45ac62a06158ea55e764769.exe	85
PID 4372 wrote to memory of 5048	4372	e232399ba45ac62a06158ea55e764769.exe	85

C:\Users\Admin\AppData\Local\Temp\e232399ba45ac62a06158ea55e764769.exe
"C:\Users\Admin\AppData\Local\Temp\e232399ba45ac62a06158ea55e764769.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:4372
- C:\Windows\temp\install_msgskinner.exe
  "C:\Windows\temp\install_msgskinner.exe" "/LICFILE=C:\Windows\temp\license.dat" "/MC=C:\Windows\system32\rebtqdhtxb.exe" "/MCPARAMS=INSTALL:5029564|77|VGOOGB3955921*0.0.47337.1*15|6"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:5048

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsi3644.tmp\InstallOptions.dll

Filesize
12KB

MD5
d61d6c709e7947296603059f8bedeba9

SHA1
bdcfc90c358c82be43ef85727a7bdfebbd6d1b69

SHA256
65012a46603b7e13807938e2a61f3c2a60cced3fb3187dfab3e391705e2c3f63

SHA512
ed5a6efd1dd5e2119a9c523b9f9154e13552b3538bf72f4b8b02d6a9c808c3ae2ba7613d9e2b3395237461703f2da0a1482a52727ffcf6fc967552390dab0f2b

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsi3644.tmp\LangDLL.dll

Filesize
5KB

MD5
8be27f3bdec2b49d0a6a674716622304

SHA1
70d17db576ed484a4c0195571118d307fd4dc1b9

SHA256
4fe0a8391574867d8bdc6fb33555d90e02796563f02d1e6536acc3294a85bd47

SHA512
add9f37dd0d7a27f19d172c82599a79d049385c12cdfb78745ce2b0685ecea8f85c718bd62ecd671bbed949529429500853534b63226809e707ad3745a8fc801

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsi3644.tmp\ioSpecial.ini

Filesize
700B

MD5
d74f35f3d7e84e6ab26fa29d3e82b03e

SHA1
005385adb6997a185d05482319eab1fb891e4e6e

SHA256
b94ef804b3cc2d198e72568f5f0ee817b594aa4710257a49e927c447c5116468

SHA512
a177320184a622c4cbde823087e7bcdf799dd9199ad90949fc115e359ddf04fef5aa95ba8732f81c2a8f8f8b5862d60f4305d854f7ae72e3759bef03c7676ffa

Download Submit
C:\Windows\Temp\install_msgskinner.exe

Filesize
922KB

MD5
f1da621246700a7c6e305cd0729402ae

SHA1
e355def95bb8d886ceaaa97098608fcf0cb554f9

SHA256
f032c0b30f554b65ad2aaa21cdd92e1e44a3948e58d81fe7226d997ca348fbb5

SHA512
723ea53e78b8bcb1f44aaef10455a75fd275062c56d6cf667b56e876fd1de5af7fda866e71535d3b7e513a117a9aaa683e19d7b5f7e052bd6a8688a22cdc5a72

Download Submit
memory/4372-0-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/4372-1-0x00000000001C0000-0x00000000001C2000-memory.dmp

Filesize
8KB

Download
memory/4372-2-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/4372-4-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/4372-12-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download