a4a0e26bb4aa352f66952902cc9704d130593adacb46017c0b2a1be2b7a9269d

Analysis

max time kernel
135s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
14/06/2023, 04:37

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General

Target
file.exe
Size 2.6MB
Sample230614-e8s79sch94
SHA256 a4a0e26bb4aa352f66952902cc9704d130593adacb46017c0b2a1be2b7a9269d
MD5 4f4c902e1e3f5f09f5e9222dbe854d5e
SHA1 60c57e3ddf1cc2f542db8a34df9538106b9e1860
SHA512 858bcb91c9d3337ac0b580d0ecaed3765f4a901753d84d1571cb3768f8e28acaf08998561a60b6691d02d54bb68d7034ec6882cdfd3ba4e928251ff9f6d5ec6b
SSDEEP 49152:6/+TH+w4lItEGTDpE+GkIrHtGsZ3JUe495xxJbDjeFl3yx8v3gUua2LE/:qgH+rIhTG+fov3Jk9vxt2LCy3DmLE/
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1312	fgnuxjype.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce	file.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup0 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP000.TMP\\\""	file.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3840	1312	WerFault.exe	86

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1312	fgnuxjype.exe
1312	fgnuxjype.exe
1312	fgnuxjype.exe
1312	fgnuxjype.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2868 wrote to memory of 4556	2868	file.exe	84
PID 2868 wrote to memory of 4556	2868	file.exe	84
PID 2868 wrote to memory of 4556	2868	file.exe	84
PID 4556 wrote to memory of 1312	4556	cmd.exe	86
PID 4556 wrote to memory of 1312	4556	cmd.exe	86
PID 4556 wrote to memory of 1312	4556	cmd.exe	86

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2868
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /d /c btjwsnhf.bat 1564361155
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4556
- - C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\fgnuxjype.exe
    fgnuxjype.exe limuctj.dat 1564361155
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    PID:1312
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1312 -s 1280
      4⤵
      Program crash
      PID:3840

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 1312 -ip 1312
1⤵
PID:440

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

btjwsnhf.bat

Path C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\btjwsnhf.bat
Size 132B
SHA256 5f7e703ab568aefbb412e5042444ce0aaf54995dacbf2dd608f3944bdae7c975
MD5 84b95cef7846de1bafba2f35b53560fd
SHA1 ae6dddcc0524637b59e5018af825186bf9a4c513
SHA512 b374e91ad4085929be7bd3ff51dfa19e0715ee2c6ec748e2d3866480aaa77419e8d56b6f90d3c0bd7432b6611a157322ac0f3cb868cf242ccc87a26a78142689
MD5 SHA1 SHA512

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eakyyduec.dat

Path C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\eakyyduec.dat
Size 1B
SHA256 08f271887ce94707da822d5263bae19d5519cb3614e0daedc4c7ce5dab7473f1
MD5 69691c7bdcc3ce6d5d8a1361f22d04ac
SHA1 c63ae6dd4fc9f9dda66970e827d13f7c73fe841c
SHA512 253405e03b91441a6dd354a9b72e040068b1bfe10e83eb1a64a086c05525d8ccae2bf09130c624af50d55c3522a4fbb7c18cfc8dd843e5f4801d9ad2b5164b12
MD5 SHA1 SHA512

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eakyyduec.dat.1

Path C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\eakyyduec.dat.1
Size 3B
SHA256 39561f8af034137905f14ca7fd5a2c891bc12982f3f8ef2271e75e93433ffa90
MD5 158b365b9eedcfaf539f5dedfd82ee97
SHA1 529f5d61ac99f60a8e473368eff1b32095a3e2bf
SHA512 a1b231c2e6af432ee7df82e00d568819e12149af707d4c4fdd018b38cc4f9761062c5b7e497bd1b67e466b89e391520b88bf13f18c8b9ff646d82df740c05c09
MD5 SHA1 SHA512

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eakyyduec.dat.2

Path C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\eakyyduec.dat.2
Size 33B
SHA256 4ebc21177ee9907f71a1641a0482603ced98e9d43389cac0ffb0b59f7343eeba
MD5 500ba63e2664798939744b8a8c9be982
SHA1 54743a77e4186cb327b803efb1ef5b3d4ac163ce
SHA512 9992b70de5867e2a00aff4f79c37ba71e827cbb104c192ebd4a553f91ae06a5b235f34e65d9d1145591c147e9e6726146cb92171945aa67b8f3294116a223fe7
MD5 SHA1 SHA512

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eakyyduec.dat.3

Path C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\eakyyduec.dat.3
Size 5.2MB
SHA256 088a5d04f2f6d6820bf1a6a390d9c0e00f88896c932848f0c97912b861479bb9
MD5 a452946137958e0cee844310f9e9fa7c
SHA1 8cf21ae4d1d764154048a02fb49412ef94094485
SHA512 ef3759e134c9b0eaaf300a57d335131faa91337497f572ef7eb1058e498a071d1741a6e0947ca9e95fe92b1ca163814ce6d1d706ad5ab010d47d18038b26beaa
SSDEEP 49152:WFlKjoqMGbkf8XfH2cvoJ7JdCrM5faRYZs9rri9/F0U2cRP8JF9zdP+T1E6gpPyV:WFlJqM48QunJ7JkA5faRO/06EnRyI
MD5 SHA1 SHA512 SSDEEP

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fgnuxjype.exe

Path C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\fgnuxjype.exe
Size 5.2MB
SHA256 9c5898b1b354b139794f10594e84e94e991971a54d179b2e9f746319ffac56aa
MD5 812d99a3d89b8de1b866ac960031e3df
SHA1 6817df1da376e8f6e68fd1ad06d78f02406b6e19
SHA512 85f72df2e679da3f337fc162ce3023d7d078c4433b49d3f4a16946fb0d2fdbadf5c736ff76e47bcdf920d5d90e05bf7f66ec9ca9fbe3f1d620cf33c046d857e7
SSDEEP 49152:eFlKjoqMGbkf8XfH2cvoJ7JdCrM5faRYZs9rri9/F0U2cRP8JF9zdP+T1E6gpPyV:eFlJqM48QunJ7JkA5faRO/06EnRyI
MD5 SHA1 SHA512 SSDEEP

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fgnuxjype.exe

Path C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\fgnuxjype.exe
Size 5.2MB
SHA256 9c5898b1b354b139794f10594e84e94e991971a54d179b2e9f746319ffac56aa
MD5 812d99a3d89b8de1b866ac960031e3df
SHA1 6817df1da376e8f6e68fd1ad06d78f02406b6e19
SHA512 85f72df2e679da3f337fc162ce3023d7d078c4433b49d3f4a16946fb0d2fdbadf5c736ff76e47bcdf920d5d90e05bf7f66ec9ca9fbe3f1d620cf33c046d857e7
SSDEEP 49152:eFlKjoqMGbkf8XfH2cvoJ7JdCrM5faRYZs9rri9/F0U2cRP8JF9zdP+T1E6gpPyV:eFlJqM48QunJ7JkA5faRO/06EnRyI
MD5 SHA1 SHA512 SSDEEP

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limuctj.dat

Path C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\limuctj.dat
Size 1001KB
SHA256 078d0cd9763c297668f580f4e2da2f4d3ac612a8a7031281709114f09c7a4d77
MD5 576c914f0b9bc323eef56523450fa712
SHA1 60698cebc92ba35b374456e15e207524a6c4f376
SHA512 56d2282ead3132171479ac61acffa2a71153942a5ede443a2c2cd21d8f304e2f270b83acb0895c01cbe771db4f7d62ed9111f577049c73964a5e4f1c26dda00f
SSDEEP 24576:fiz9k4029GyLT1AhiyGDl/ZZiRDG3HEwe2bMVpB4L:pKGG+CWsL
MD5 SHA1 SHA512 SSDEEP

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memory/1312-156-0x0000000016600000-0x0000000016601000-memory.dmp

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memory/1312-157-0x000000001DF00000-0x000000001DF01000-memory.dmp

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memory/1312-159-0x0000000004300000-0x0000000004301000-memory.dmp

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memory/1312-158-0x0000000036C00000-0x0000000036C01000-memory.dmp

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memory/1312-161-0x0000000016500000-0x0000000016501000-memory.dmp

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memory/1312-160-0x000000001E400000-0x000000001E401000-memory.dmp

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