3650e941f589db93a518d602e4b0ddd9a54c7c42f3d1d06bdda467651cbb95f7

Analysis

max time kernel
251s
max time network
337s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
06-12-2022 14:22

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General

Target

33cfde0badba18cca2d44476d7d45edc.exe
Size

328KB
MD5

33cfde0badba18cca2d44476d7d45edc
SHA1

290003e3266acffa2e669e50ff0aad8f3974b214
SHA256

3650e941f589db93a518d602e4b0ddd9a54c7c42f3d1d06bdda467651cbb95f7
SHA512

9ee920f4b040d54b48bd80bf1cf29a9ce8572fbf75c737f55fdf8fc7127b63d900e3690af85124b40593e1a30142bce7235c8df025c7e1ec71f97e8cf4478dc5
SSDEEP

6144:PBnxm/hZudIIuLpZPP5ZW757lLRmNAIOVn:LzdIZpZPcVmNPG

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 2 IoCs

Processes:

xcfoyif.exexcfoyif.exe

pid process

760 xcfoyif.exe
868 xcfoyif.exe
Loads dropped DLL 5 IoCs

Processes:

33cfde0badba18cca2d44476d7d45edc.exexcfoyif.exeWerFault.exe

pid process

560 33cfde0badba18cca2d44476d7d45edc.exe
760 xcfoyif.exe
640 WerFault.exe
640 WerFault.exe
640 WerFault.exe

pid	process
760	xcfoyif.exe
868	xcfoyif.exe

pid	process
560	33cfde0badba18cca2d44476d7d45edc.exe
760	xcfoyif.exe
640	WerFault.exe
640	WerFault.exe
640	WerFault.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

xcfoyif.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\gjtm = "C:\\Users\\Admin\\AppData\\Roaming\\rojm\\yfuakto.exe \"C:\\Users\\Admin\\AppData\\Local\\Temp\\xcfoyif.exe\" C:\\Users\\Admin\\AppData\\Local\\Temp\\"	xcfoyif.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

xcfoyif.exe

description pid process target process

PID 760 set thread context of 868 760 xcfoyif.exe xcfoyif.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

640 868 WerFault.exe xcfoyif.exe
Suspicious behavior: MapViewOfSection 2 IoCs

Processes:

xcfoyif.exe

pid process

760 xcfoyif.exe
760 xcfoyif.exe

description	pid	process	target process
PID 760 set thread context of 868	760	xcfoyif.exe	xcfoyif.exe

pid	pid_target	process	target process
640	868	WerFault.exe	xcfoyif.exe

pid	process
760	xcfoyif.exe
760	xcfoyif.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

33cfde0badba18cca2d44476d7d45edc.exexcfoyif.exexcfoyif.exe

description	pid	process	target process
PID 560 wrote to memory of 760	560	33cfde0badba18cca2d44476d7d45edc.exe	xcfoyif.exe
PID 560 wrote to memory of 760	560	33cfde0badba18cca2d44476d7d45edc.exe	xcfoyif.exe
PID 560 wrote to memory of 760	560	33cfde0badba18cca2d44476d7d45edc.exe	xcfoyif.exe
PID 560 wrote to memory of 760	560	33cfde0badba18cca2d44476d7d45edc.exe	xcfoyif.exe
PID 760 wrote to memory of 868	760	xcfoyif.exe	xcfoyif.exe
PID 760 wrote to memory of 868	760	xcfoyif.exe	xcfoyif.exe
PID 760 wrote to memory of 868	760	xcfoyif.exe	xcfoyif.exe
PID 760 wrote to memory of 868	760	xcfoyif.exe	xcfoyif.exe
PID 760 wrote to memory of 868	760	xcfoyif.exe	xcfoyif.exe
PID 868 wrote to memory of 640	868	xcfoyif.exe	WerFault.exe
PID 868 wrote to memory of 640	868	xcfoyif.exe	WerFault.exe
PID 868 wrote to memory of 640	868	xcfoyif.exe	WerFault.exe
PID 868 wrote to memory of 640	868	xcfoyif.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\33cfde0badba18cca2d44476d7d45edc.exe
"C:\Users\Admin\AppData\Local\Temp\33cfde0badba18cca2d44476d7d45edc.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:560

C:\Users\Admin\AppData\Local\Temp\xcfoyif.exe
"C:\Users\Admin\AppData\Local\Temp\xcfoyif.exe" C:\Users\Admin\AppData\Local\Temp\rrchmtd.ihc
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:760

C:\Users\Admin\AppData\Local\Temp\xcfoyif.exe
"C:\Users\Admin\AppData\Local\Temp\xcfoyif.exe"
3⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:868

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 868 -s 184
4⤵
- Loads dropped DLL
- Program crash
PID:640

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\kmxqftqk.qph
Filesize
98KB

MD5
6c84aab264b84f7b49e3469dadc6fd2e

SHA1
b504d78a83fc55921d8696019d1ba3117358e71d

SHA256
814b2671e7062d4a1a0de38d9c5bf5dc0195af248397b39e65300993066d99f9

SHA512
c7f0a6145160e1692f24fea49340b884636393138114765bdd93f469fb30c131e004527b0205c8549da4c77d16b556900c58e182485ba65b1dcffa2a49948b3a

Download Submit
C:\Users\Admin\AppData\Local\Temp\rrchmtd.ihc
Filesize
7KB

MD5
88c3926cb29745d988b0e794378e4728

SHA1
8b58f03f1542aa30878619e52a800037538639cb

SHA256
5ef5687c9cfc258ff4283ce3b67eef061bfedb2e7b81f76392a3ffdcc5a061ca

SHA512
b3cd557f2ba7325f07ba2004365959d02dbb4b63607b807e652c409876effbe9e4e393d44cf9d9d827ceec21f24f93a72e3fb3926fb07269f751a2a162480fef

Download Submit
C:\Users\Admin\AppData\Local\Temp\xcfoyif.exe
Filesize
13KB

MD5
a76eebf673691ad96288a99825e4c5c6

SHA1
e82d6bd4d1f3b19fe88f0e53f811260fb89fc2c1

SHA256
266237fe1dfb6f03610b7c3311d6122963787f64e2a6ef374a7d043921b30f74

SHA512
34d0535d4f9a08fa7233e4a1e4e2fbc8e5322f089568fe343e2273f99164cdafc322a08fe8dc0847e48389cf3394292a873147540991b303171aad8189ccd596

Download Submit
C:\Users\Admin\AppData\Local\Temp\xcfoyif.exe
Filesize
13KB

MD5
a76eebf673691ad96288a99825e4c5c6

SHA1
e82d6bd4d1f3b19fe88f0e53f811260fb89fc2c1

SHA256
266237fe1dfb6f03610b7c3311d6122963787f64e2a6ef374a7d043921b30f74

SHA512
34d0535d4f9a08fa7233e4a1e4e2fbc8e5322f089568fe343e2273f99164cdafc322a08fe8dc0847e48389cf3394292a873147540991b303171aad8189ccd596

Download Submit
C:\Users\Admin\AppData\Local\Temp\xcfoyif.exe
Filesize
13KB

MD5
a76eebf673691ad96288a99825e4c5c6

SHA1
e82d6bd4d1f3b19fe88f0e53f811260fb89fc2c1

SHA256
266237fe1dfb6f03610b7c3311d6122963787f64e2a6ef374a7d043921b30f74

SHA512
34d0535d4f9a08fa7233e4a1e4e2fbc8e5322f089568fe343e2273f99164cdafc322a08fe8dc0847e48389cf3394292a873147540991b303171aad8189ccd596

Download Submit
\Users\Admin\AppData\Local\Temp\xcfoyif.exe
Filesize
13KB

MD5
a76eebf673691ad96288a99825e4c5c6

SHA1
e82d6bd4d1f3b19fe88f0e53f811260fb89fc2c1

SHA256
266237fe1dfb6f03610b7c3311d6122963787f64e2a6ef374a7d043921b30f74

SHA512
34d0535d4f9a08fa7233e4a1e4e2fbc8e5322f089568fe343e2273f99164cdafc322a08fe8dc0847e48389cf3394292a873147540991b303171aad8189ccd596

Download Submit
\Users\Admin\AppData\Local\Temp\xcfoyif.exe
Filesize
13KB

MD5
a76eebf673691ad96288a99825e4c5c6

SHA1
e82d6bd4d1f3b19fe88f0e53f811260fb89fc2c1

SHA256
266237fe1dfb6f03610b7c3311d6122963787f64e2a6ef374a7d043921b30f74

SHA512
34d0535d4f9a08fa7233e4a1e4e2fbc8e5322f089568fe343e2273f99164cdafc322a08fe8dc0847e48389cf3394292a873147540991b303171aad8189ccd596

Download Submit
\Users\Admin\AppData\Local\Temp\xcfoyif.exe
Filesize
13KB

MD5
a76eebf673691ad96288a99825e4c5c6

SHA1
e82d6bd4d1f3b19fe88f0e53f811260fb89fc2c1

SHA256
266237fe1dfb6f03610b7c3311d6122963787f64e2a6ef374a7d043921b30f74

SHA512
34d0535d4f9a08fa7233e4a1e4e2fbc8e5322f089568fe343e2273f99164cdafc322a08fe8dc0847e48389cf3394292a873147540991b303171aad8189ccd596

Download Submit
\Users\Admin\AppData\Local\Temp\xcfoyif.exe
Filesize
13KB

MD5
a76eebf673691ad96288a99825e4c5c6

SHA1
e82d6bd4d1f3b19fe88f0e53f811260fb89fc2c1

SHA256
266237fe1dfb6f03610b7c3311d6122963787f64e2a6ef374a7d043921b30f74

SHA512
34d0535d4f9a08fa7233e4a1e4e2fbc8e5322f089568fe343e2273f99164cdafc322a08fe8dc0847e48389cf3394292a873147540991b303171aad8189ccd596

Download Submit
\Users\Admin\AppData\Local\Temp\xcfoyif.exe
Filesize
13KB

MD5
a76eebf673691ad96288a99825e4c5c6

SHA1
e82d6bd4d1f3b19fe88f0e53f811260fb89fc2c1

SHA256
266237fe1dfb6f03610b7c3311d6122963787f64e2a6ef374a7d043921b30f74

SHA512
34d0535d4f9a08fa7233e4a1e4e2fbc8e5322f089568fe343e2273f99164cdafc322a08fe8dc0847e48389cf3394292a873147540991b303171aad8189ccd596

Download Submit
memory/560-54-0x0000000075551000-0x0000000075553000-memory.dmp

Filesize
8KB

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memory/640-66-0x0000000000000000-mapping.dmp

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memory/760-56-0x0000000000000000-mapping.dmp

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memory/868-63-0x0000000000085738-mapping.dmp

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