1b4c923e24b664d37b86d03137329a26825cda84e8fdb85d8636457c4c02444a

Analysis

max time kernel
43s
max time network
46s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
11-10-2022 00:13

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General

Target

1b4c923e24b664d37b86d03137329a26825cda84e8fdb85d8636457c4c02444a.dll
Size

195KB
MD5

6c79e1fc7d42c40bbbf8ee159db079e0
SHA1

6b08b7c41eefae80e847f7eb68fba3a62f750dcd
SHA256

1b4c923e24b664d37b86d03137329a26825cda84e8fdb85d8636457c4c02444a
SHA512

91bdfc859545f4f4be744a6fce0c0dd8bab2757d61d01a04699c1dae2536632370e03c2aaaf926a246f6f13eb7194b23d9fc3febccfdb8d92c509b61b1c6b6f2
SSDEEP

6144:ZyE00tVMm0OFgaZSs1D2wY3Yspdg5LFsT1y:ZyErQm7S1wYoR5RsY

Score

8^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1920	rundll32mgr.exe

UPX packed file 1 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1920-63-0x0000000000400000-0x000000000042A000-memory.dmp	upx

Loads dropped DLL 4 IoCs

pid	Process
780	rundll32.exe
780	rundll32.exe
1920	rundll32mgr.exe
1920	rundll32mgr.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\rundll32mgr.exe	rundll32.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1896	1920	WerFault.exe	28

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 900 wrote to memory of 780	900	rundll32.exe	27
PID 900 wrote to memory of 780	900	rundll32.exe	27
PID 900 wrote to memory of 780	900	rundll32.exe	27
PID 900 wrote to memory of 780	900	rundll32.exe	27
PID 900 wrote to memory of 780	900	rundll32.exe	27
PID 900 wrote to memory of 780	900	rundll32.exe	27
PID 900 wrote to memory of 780	900	rundll32.exe	27
PID 780 wrote to memory of 1920	780	rundll32.exe	28
PID 780 wrote to memory of 1920	780	rundll32.exe	28
PID 780 wrote to memory of 1920	780	rundll32.exe	28
PID 780 wrote to memory of 1920	780	rundll32.exe	28

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\1b4c923e24b664d37b86d03137329a26825cda84e8fdb85d8636457c4c02444a.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:900
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\1b4c923e24b664d37b86d03137329a26825cda84e8fdb85d8636457c4c02444a.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:780
- - C:\Windows\SysWOW64\rundll32mgr.exe
    C:\Windows\SysWOW64\rundll32mgr.exe
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    PID:1920
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1920 -s 180
      4⤵
      Program crash
      PID:1896

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

C:\Windows\SysWOW64\rundll32mgr.exe

Filesize
106KB

MD5
dcd2cafa72c9d5bd898b636a18133d3c

SHA1
b55e85453de9254cbf4c21c0de92d82c6deefccb

SHA256
936b14fbbf629fcf92ac06673d974de2b2a44a109953e6664e1c36a4e5c9d27c

SHA512
59e475f668015b3a6372d79ea6459b21ae591d73305b7696ef139fe0e716f1038595ea5df079e1850535e6358aef4d8e92bdee68ffd07b44471bc7133041952c

Download Submit
\Users\Admin\AppData\Local\Temp\~TMA00.tmp

Filesize
1.2MB

MD5
d124f55b9393c976963407dff51ffa79

SHA1
2c7bbedd79791bfb866898c85b504186db610b5d

SHA256
ea1e16247c848c8c171c4cd1fa17bc5a018a1fcb0c0dac25009066b6667b8eef

SHA512
278fe3a4b1fbbe700e4f4483b610133e975e36e101455661d5197bd892a68839b9d555499040d200c92aefa9e3819380e395c0cd85d5fc845c6364d128a8cf06

Download Submit
\Users\Admin\AppData\Local\Temp\~TMA5F.tmp

Filesize
1.1MB

MD5
9b98d47916ead4f69ef51b56b0c2323c

SHA1
290a80b4ded0efc0fd00816f373fcea81a521330

SHA256
96e0ae104c9662d0d20fdf59844c2d18334e5847b6c4fc7f8ce4b3b87f39887b

SHA512
68b67021f228d8d71df4deb0b6388558b2f935a6aa466a12199cd37ada47ee588ea407b278d190d3a498b0ef3f5f1a2573a469b7ea5561ab2e7055c45565fe94

Download Submit
\Windows\SysWOW64\rundll32mgr.exe

Filesize
106KB

MD5
dcd2cafa72c9d5bd898b636a18133d3c

SHA1
b55e85453de9254cbf4c21c0de92d82c6deefccb

SHA256
936b14fbbf629fcf92ac06673d974de2b2a44a109953e6664e1c36a4e5c9d27c

SHA512
59e475f668015b3a6372d79ea6459b21ae591d73305b7696ef139fe0e716f1038595ea5df079e1850535e6358aef4d8e92bdee68ffd07b44471bc7133041952c

Download Submit
\Windows\SysWOW64\rundll32mgr.exe

Filesize
106KB

MD5
dcd2cafa72c9d5bd898b636a18133d3c

SHA1
b55e85453de9254cbf4c21c0de92d82c6deefccb

SHA256
936b14fbbf629fcf92ac06673d974de2b2a44a109953e6664e1c36a4e5c9d27c

SHA512
59e475f668015b3a6372d79ea6459b21ae591d73305b7696ef139fe0e716f1038595ea5df079e1850535e6358aef4d8e92bdee68ffd07b44471bc7133041952c

Download Submit
memory/780-66-0x0000000074D50000-0x0000000074D86000-memory.dmp

Filesize
216KB

Download
memory/780-55-0x0000000076121000-0x0000000076123000-memory.dmp

Filesize
8KB

Download
memory/780-67-0x0000000074D10000-0x0000000074D46000-memory.dmp

Filesize
216KB

Download
memory/780-68-0x0000000074D50000-0x0000000074D86000-memory.dmp

Filesize
216KB

Download
memory/1920-65-0x00000000776E0000-0x0000000077860000-memory.dmp

Filesize
1.5MB

Download
memory/1920-64-0x0000000000220000-0x000000000024A000-memory.dmp

Filesize
168KB

Download
memory/1920-63-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download