3c7cba979e374e51c857c6af5b0921f9346bacd26a78b96b911c1d09549eea56

Analysis

max time kernel
57s
max time network
58s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
20/10/2022, 06:52

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General

Target

3c7cba979e374e51c857c6af5b0921f9346bacd26a78b96b911c1d09549eea56.exe
Size

61KB
MD5

81803c497c3a15b189f068c6ea91e077
SHA1

1aa429494e07061ab79677476cd8292f5886238e
SHA256

3c7cba979e374e51c857c6af5b0921f9346bacd26a78b96b911c1d09549eea56
SHA512

eb0e295b800d11cee7c1d48df9d3fe6d31b475bfb17aada71d70f23ae86bbf84814b3d719f0ad3636d9e3c69667e57868234ff0e57d0b878aed1b10108c3d19d
SSDEEP

1536:1OPhlosUoAarDX1JJd7NkJqpft5IKVvig:1OPlfJJdlfzpVvj

Score

9^/10

upx

Malware Config

Signatures

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x0009000000012322-55.dat	acprotect

UPX packed file 1 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x0009000000012322-55.dat	upx

Loads dropped DLL 3 IoCs

pid	Process
1324	3c7cba979e374e51c857c6af5b0921f9346bacd26a78b96b911c1d09549eea56.exe
1324	3c7cba979e374e51c857c6af5b0921f9346bacd26a78b96b911c1d09549eea56.exe
1324	3c7cba979e374e51c857c6af5b0921f9346bacd26a78b96b911c1d09549eea56.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\winrar\ico\taobao.tbico	3c7cba979e374e51c857c6af5b0921f9346bacd26a78b96b911c1d09549eea56.exe

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

System Information Discovery
T1082

Modifies registry class 4 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mk3	3c7cba979e374e51c857c6af5b0921f9346bacd26a78b96b911c1d09549eea56.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mk3\ = "VBSFile"	3c7cba979e374e51c857c6af5b0921f9346bacd26a78b96b911c1d09549eea56.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.tbico	3c7cba979e374e51c857c6af5b0921f9346bacd26a78b96b911c1d09549eea56.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.tbico\ = "icofile"	3c7cba979e374e51c857c6af5b0921f9346bacd26a78b96b911c1d09549eea56.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1324 wrote to memory of 1352	1324	3c7cba979e374e51c857c6af5b0921f9346bacd26a78b96b911c1d09549eea56.exe	30
PID 1324 wrote to memory of 1352	1324	3c7cba979e374e51c857c6af5b0921f9346bacd26a78b96b911c1d09549eea56.exe	30
PID 1324 wrote to memory of 1352	1324	3c7cba979e374e51c857c6af5b0921f9346bacd26a78b96b911c1d09549eea56.exe	30
PID 1324 wrote to memory of 1352	1324	3c7cba979e374e51c857c6af5b0921f9346bacd26a78b96b911c1d09549eea56.exe	30
PID 1324 wrote to memory of 1352	1324	3c7cba979e374e51c857c6af5b0921f9346bacd26a78b96b911c1d09549eea56.exe	30
PID 1324 wrote to memory of 1352	1324	3c7cba979e374e51c857c6af5b0921f9346bacd26a78b96b911c1d09549eea56.exe	30
PID 1324 wrote to memory of 1352	1324	3c7cba979e374e51c857c6af5b0921f9346bacd26a78b96b911c1d09549eea56.exe	30

C:\Users\Admin\AppData\Local\Temp\3c7cba979e374e51c857c6af5b0921f9346bacd26a78b96b911c1d09549eea56.exe
"C:\Users\Admin\AppData\Local\Temp\3c7cba979e374e51c857c6af5b0921f9346bacd26a78b96b911c1d09549eea56.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1324
- C:\Windows\SysWOW64\wscript.exe
  wscript.exe /nologo "C:\Users\Admin\AppData\Local\Temp\501.mk3"
  2⤵
  PID:1352

Network

MITRE ATT&CK Enterprise v6

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

\Users\Admin\AppData\Local\Temp\nsj197D.tmp\InetLoad.dll

Filesize
18KB

MD5
994669c5737b25c26642c94180e92fa2

SHA1
d8a1836914a446b0e06881ce1be8631554adafde

SHA256
bf01a1f272e0daf82df3407690b646e0ff6b2c562e36e47cf177eda71ccb6f6c

SHA512
d0ab7ca7f890ef9e59015c33e6b400a0a4d1ce0d24599537e09e845f4b953e3ecd44bf3e3cbe584f57c2948743e689ed67d2d40e6caf923bd630886e89c38563

Download Submit
\Users\Admin\AppData\Local\Temp\nsj197D.tmp\InetLoad.dll

Filesize
18KB

MD5
994669c5737b25c26642c94180e92fa2

SHA1
d8a1836914a446b0e06881ce1be8631554adafde

SHA256
bf01a1f272e0daf82df3407690b646e0ff6b2c562e36e47cf177eda71ccb6f6c

SHA512
d0ab7ca7f890ef9e59015c33e6b400a0a4d1ce0d24599537e09e845f4b953e3ecd44bf3e3cbe584f57c2948743e689ed67d2d40e6caf923bd630886e89c38563

Download Submit
\Users\Admin\AppData\Local\Temp\nsj197D.tmp\nsRandom.dll

Filesize
21KB

MD5
ab467b8dfaa660a0f0e5b26e28af5735

SHA1
596abd2c31eaff3479edf2069db1c155b59ce74d

SHA256
db267d9920395b4badc48de04df99dfd21d579480d103cae0f48e6578197ff73

SHA512
7d002dc203997b8a4d8ec20c92cd82848e29d746414f4a61265c76d4afb12c05bce826fc63f4d2bd3d527f38506c391855767d864c37584df11b5db9ca008301

Download Submit
memory/1324-54-0x0000000075A11000-0x0000000075A13000-memory.dmp

Filesize
8KB

Download
memory/1324-57-0x00000000003E0000-0x00000000003F2000-memory.dmp

Filesize
72KB

Download
memory/1324-58-0x00000000003E0000-0x00000000003F2000-memory.dmp

Filesize
72KB

Download
memory/1324-61-0x00000000003E0000-0x00000000003E2000-memory.dmp

Filesize
8KB

Download