155c76210badfc3ef9bfc764a7ab3cb9702f76c9d63351a213f61d44abbf0b4f

Analysis

max time kernel
124s
max time network
114s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
21/02/2023, 14:19

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General

Target
186f63c903d67898b0a9817b3392ec62.exe
Size 2.1MB
Sample230221-rmt9naha2x
SHA256 155c76210badfc3ef9bfc764a7ab3cb9702f76c9d63351a213f61d44abbf0b4f
MD5 186f63c903d67898b0a9817b3392ec62
SHA1 7eb20571e0008195ddc5d7d4b59db55d6f0353f5
SHA512 ce0ab90accc02825b949528bec0fccd89280c7026bf54903ba22c4985370c0e73cf332e461640bc6dd3cb5a7b8a2be22d075a49424dc2d710d881b6d2e6630f4
SSDEEP 49152:pYkxIiXxybmRXmrLT6Qm+1DhGQNVLwF9IMmk4PcE55cOk:ykxIExybmRXmrLJNgALq9IMpHynk
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
440	conhost.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	186f63c903d67898b0a9817b3392ec62.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\\\""	186f63c903d67898b0a9817b3392ec62.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
5060	440	WerFault.exe	82

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
440	conhost.exe
440	conhost.exe
440	conhost.exe
440	conhost.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4768 wrote to memory of 1728	4768	186f63c903d67898b0a9817b3392ec62.exe	80
PID 4768 wrote to memory of 1728	4768	186f63c903d67898b0a9817b3392ec62.exe	80
PID 4768 wrote to memory of 1728	4768	186f63c903d67898b0a9817b3392ec62.exe	80
PID 1728 wrote to memory of 440	1728	cmd.exe	82
PID 1728 wrote to memory of 440	1728	cmd.exe	82
PID 1728 wrote to memory of 440	1728	cmd.exe	82

C:\Users\Admin\AppData\Local\Temp\186f63c903d67898b0a9817b3392ec62.exe
"C:\Users\Admin\AppData\Local\Temp\186f63c903d67898b0a9817b3392ec62.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4768
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /d /c bxgejqeojv.bat 101881118529
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1728
- - C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\conhost.exe
    conhost.exe lhpmmfc.dat 101881118529
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    PID:440
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 440 -s 1256
      4⤵
      Program crash
      PID:5060

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 440 -ip 440
1⤵
PID:2788

C:\Windows\System32\Upfc.exe
C:\Windows\System32\Upfc.exe /launchtype periodic /cv Whb4pM6zcU+EO9lhbCe/YQ.0
1⤵
PID:3844

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

bxgejqeojv.bat

Path C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\bxgejqeojv.bat
Size 113B
SHA256 e5ede94c2a05db5aabeafff319ffd59d2b552b35f5daa3f4fa4b602da0bc1594
MD5 e797a3f02ffcc094a7e44645788b6f6f
SHA1 86f4b55ddaec0abc1b53d893d1844903a0bb2000
SHA512 f187505b8b7bdc3a5a75367bdb4f1a362e060fdb8395d8bda7a48b4a0a1ac5414fe5d27271129822b35aab92533f0ecbdba3accc493c20528c763b0fa2a00296
MD5 SHA1 SHA512

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conhost.exe

Path C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\conhost.exe
Size 5.2MB
SHA256 d08256e94e7f0006495f48f04bfde0f08fe57bb3d6f881ffd5d3e7382a437379
MD5 8037fcd47b0e6228e8a9a10cc27f5535
SHA1 b2f6ae6d348fce24a85623bf082819e90df07a05
SHA512 365e901156859b743fad1e89f035ae9d38be53d2ce60131328aebe630db62e67d059c76cba17dcb4a5c2601775638c078b0e57f10c86190039f60b3510267649
SSDEEP 49152:B6LMNBt572rwbF7qS0NzKSgXJz104r5LxlondBXipDjuFUTRRooPxUz56QBwRTjt:BbT7Owh0NzK/5z104r5JXwzwHRyIM2T
MD5 SHA1 SHA512 SSDEEP

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conhost.exe

Path C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\conhost.exe
Size 5.2MB
SHA256 d08256e94e7f0006495f48f04bfde0f08fe57bb3d6f881ffd5d3e7382a437379
MD5 8037fcd47b0e6228e8a9a10cc27f5535
SHA1 b2f6ae6d348fce24a85623bf082819e90df07a05
SHA512 365e901156859b743fad1e89f035ae9d38be53d2ce60131328aebe630db62e67d059c76cba17dcb4a5c2601775638c078b0e57f10c86190039f60b3510267649
SSDEEP 49152:B6LMNBt572rwbF7qS0NzKSgXJz104r5LxlondBXipDjuFUTRRooPxUz56QBwRTjt:BbT7Owh0NzK/5z104r5JXwzwHRyIM2T
MD5 SHA1 SHA512 SSDEEP

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ewmvvrmvfl.dat

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

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ewmvvrmvfl.dat.1

Path C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\ewmvvrmvfl.dat.1
Size 2B
SHA256 ccc8d02c8169fdaeaaa52f9c74dfa3e1238ac5d0e89bc35223d423517f8e2b2d
MD5 873e009ecf0ccec19b3570baf5e70305
SHA1 d68e129e2ac27d06de80d1b16c1c4c4f589523f1
SHA512 4e483d49046751b02d209650cd1d82df15a3a99a41036c60fb4a1318df61fb7b51236442e5ad1e3116249737721e9aa6717becba1b2ef1ddc4fece5fca756f7e
MD5 SHA1 SHA512

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ewmvvrmvfl.dat.2

Path C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\ewmvvrmvfl.dat.2
Size 5.2MB
SHA256 476208c256cd4a02d786e1921955c3403f5daa393f8823eb54207211158d8634
MD5 81128d3275a25973f6d3890a7170916c
SHA1 cd843ece3d182a8c9c98f568745715dd5026e896
SHA512 59ac0665a85d0b11e2f45412477627c0b2aa53f2ebf550281c73f5735a2a50073f6e60cedc9e2092be075fb92426b37dbc6ca310b7a6844f9aeb6f750dc7193a
SSDEEP 49152:Y6LMNBt572rwbF7qS0NzKSgXJz104r5LxlondBXipDjuFUTRRooPxUz56QBwRTjt:YbT7Owh0NzK/5z104r5JXwzwHRyIM2T
MD5 SHA1 SHA512 SSDEEP

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lhpmmfc.dat

Path C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\lhpmmfc.dat
Size 368KB
SHA256 52267240c25674e4b5a7d41427df5db0a4cdba8de8bed83b3ce4db3e74ee7c3f
MD5 f2e4b9a2981bcac1086cd9f7be5b7cbc
SHA1 9d9bfc8d50ea7e0d4233f37024abf9f0d1929942
SHA512 22ca9a2e6efb8855756fd0dc29ef335b5bf724bab5bc012888b78bd096cd3eb1cca49dc540e18461f36891b52a93fbe0a8e1773b3d2640b95ea969c855567ca8
SSDEEP 6144:Uu6ABDwYZZp0ReJiylSLzVC4vOeMOp+NobwC/n9WKI99WO7OvVWzG47JLcdMYjDW:U6BDLrpAdylSvOeaCFWb0zvEaiJY3W
MD5 SHA1 SHA512 SSDEEP

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memory/440-153-0x000000000C900000-0x000000000C901000-memory.dmp

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memory/440-155-0x000000003D300000-0x000000003D301000-memory.dmp

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memory/440-156-0x0000000034A00000-0x0000000034A01000-memory.dmp

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memory/440-157-0x0000000015C00000-0x0000000015C01000-memory.dmp

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memory/440-158-0x0000000016A00000-0x0000000016A01000-memory.dmp

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memory/440-154-0x000000001D000000-0x000000001D001000-memory.dmp

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