afaa6cc4cfaf56d9dc58db5e3a2986d0141ba9cc6bdfc42c8a1f23decb9ff735

Analysis

max time kernel
151s
max time network
156s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
02/10/2022, 23:39

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General

Target

afaa6cc4cfaf56d9dc58db5e3a2986d0141ba9cc6bdfc42c8a1f23decb9ff735.exe
Size

308KB
MD5

7100d74c77403b2b8efd3580fd158441
SHA1

b9bf41e3aff8d0c298335121881001573c7c5fa7
SHA256

afaa6cc4cfaf56d9dc58db5e3a2986d0141ba9cc6bdfc42c8a1f23decb9ff735
SHA512

3e090d454e0eb21f4354d396036ba3665e08fe3952ac2567802f228c4421669e5b698ea1767ac954091909efde0719a245e97513d3f9fd07a5ff6d065a1e1462
SSDEEP

6144:O4fge2RcBvTqnyW1x/UhHmi0RrN6uWKXOFfa:Hb2R2rqnhUtmdRrN6FK2i

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1128	maybx.exe

Deletes itself 1 IoCs

pid	Process
360	cmd.exe

Loads dropped DLL 2 IoCs

pid	Process
1464	afaa6cc4cfaf56d9dc58db5e3a2986d0141ba9cc6bdfc42c8a1f23decb9ff735.exe
1464	afaa6cc4cfaf56d9dc58db5e3a2986d0141ba9cc6bdfc42c8a1f23decb9ff735.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\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run	maybx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\Maybx = "C:\\Users\\Admin\\AppData\\Roaming\\Ykiver\\maybx.exe"	maybx.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1464 set thread context of 360	1464	afaa6cc4cfaf56d9dc58db5e3a2986d0141ba9cc6bdfc42c8a1f23decb9ff735.exe	28

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
1128	maybx.exe
1128	maybx.exe
1128	maybx.exe
1128	maybx.exe
1128	maybx.exe
1128	maybx.exe
1128	maybx.exe
1128	maybx.exe
1128	maybx.exe
1128	maybx.exe
1128	maybx.exe
1128	maybx.exe
1128	maybx.exe
1128	maybx.exe
1128	maybx.exe
1128	maybx.exe
1128	maybx.exe
1128	maybx.exe
1128	maybx.exe
1128	maybx.exe
1128	maybx.exe
1128	maybx.exe
1128	maybx.exe
1128	maybx.exe
1128	maybx.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1464 wrote to memory of 1128	1464	afaa6cc4cfaf56d9dc58db5e3a2986d0141ba9cc6bdfc42c8a1f23decb9ff735.exe	27
PID 1464 wrote to memory of 1128	1464	afaa6cc4cfaf56d9dc58db5e3a2986d0141ba9cc6bdfc42c8a1f23decb9ff735.exe	27
PID 1464 wrote to memory of 1128	1464	afaa6cc4cfaf56d9dc58db5e3a2986d0141ba9cc6bdfc42c8a1f23decb9ff735.exe	27
PID 1464 wrote to memory of 1128	1464	afaa6cc4cfaf56d9dc58db5e3a2986d0141ba9cc6bdfc42c8a1f23decb9ff735.exe	27
PID 1128 wrote to memory of 1248	1128	maybx.exe	7
PID 1128 wrote to memory of 1248	1128	maybx.exe	7
PID 1128 wrote to memory of 1248	1128	maybx.exe	7
PID 1128 wrote to memory of 1248	1128	maybx.exe	7
PID 1128 wrote to memory of 1248	1128	maybx.exe	7
PID 1128 wrote to memory of 1360	1128	maybx.exe	14
PID 1128 wrote to memory of 1360	1128	maybx.exe	14
PID 1128 wrote to memory of 1360	1128	maybx.exe	14
PID 1128 wrote to memory of 1360	1128	maybx.exe	14
PID 1128 wrote to memory of 1360	1128	maybx.exe	14
PID 1128 wrote to memory of 1392	1128	maybx.exe	13
PID 1128 wrote to memory of 1392	1128	maybx.exe	13
PID 1128 wrote to memory of 1392	1128	maybx.exe	13
PID 1128 wrote to memory of 1392	1128	maybx.exe	13
PID 1128 wrote to memory of 1392	1128	maybx.exe	13
PID 1128 wrote to memory of 1464	1128	maybx.exe	26
PID 1128 wrote to memory of 1464	1128	maybx.exe	26
PID 1128 wrote to memory of 1464	1128	maybx.exe	26
PID 1128 wrote to memory of 1464	1128	maybx.exe	26
PID 1128 wrote to memory of 1464	1128	maybx.exe	26
PID 1464 wrote to memory of 360	1464	afaa6cc4cfaf56d9dc58db5e3a2986d0141ba9cc6bdfc42c8a1f23decb9ff735.exe	28
PID 1464 wrote to memory of 360	1464	afaa6cc4cfaf56d9dc58db5e3a2986d0141ba9cc6bdfc42c8a1f23decb9ff735.exe	28
PID 1464 wrote to memory of 360	1464	afaa6cc4cfaf56d9dc58db5e3a2986d0141ba9cc6bdfc42c8a1f23decb9ff735.exe	28
PID 1464 wrote to memory of 360	1464	afaa6cc4cfaf56d9dc58db5e3a2986d0141ba9cc6bdfc42c8a1f23decb9ff735.exe	28
PID 1464 wrote to memory of 360	1464	afaa6cc4cfaf56d9dc58db5e3a2986d0141ba9cc6bdfc42c8a1f23decb9ff735.exe	28
PID 1464 wrote to memory of 360	1464	afaa6cc4cfaf56d9dc58db5e3a2986d0141ba9cc6bdfc42c8a1f23decb9ff735.exe	28
PID 1464 wrote to memory of 360	1464	afaa6cc4cfaf56d9dc58db5e3a2986d0141ba9cc6bdfc42c8a1f23decb9ff735.exe	28
PID 1464 wrote to memory of 360	1464	afaa6cc4cfaf56d9dc58db5e3a2986d0141ba9cc6bdfc42c8a1f23decb9ff735.exe	28
PID 1464 wrote to memory of 360	1464	afaa6cc4cfaf56d9dc58db5e3a2986d0141ba9cc6bdfc42c8a1f23decb9ff735.exe	28

C:\Windows\system32\taskhost.exe
"taskhost.exe"
1⤵
PID:1248

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1392
- C:\Users\Admin\AppData\Local\Temp\afaa6cc4cfaf56d9dc58db5e3a2986d0141ba9cc6bdfc42c8a1f23decb9ff735.exe
  "C:\Users\Admin\AppData\Local\Temp\afaa6cc4cfaf56d9dc58db5e3a2986d0141ba9cc6bdfc42c8a1f23decb9ff735.exe"
  2⤵
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:1464
- - C:\Users\Admin\AppData\Roaming\Ykiver\maybx.exe
    "C:\Users\Admin\AppData\Roaming\Ykiver\maybx.exe"
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:1128
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\YOUFF70.bat"
    3⤵
    - Deletes itself
    PID:360

C:\Windows\system32\Dwm.exe
"C:\Windows\system32\Dwm.exe"
1⤵
PID:1360

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

C:\Users\Admin\AppData\Local\Temp\YOUFF70.bat

Filesize
303B

MD5
bedd15eac9a49c9c17acf28e0b115151

SHA1
ccbff023de81c0570e234c6bfe7dd4aa66df77b5

SHA256
5990a9dcc5d243e9d2ed270914e51428f60f8f473aaa2efcef31a2d56d607f2a

SHA512
a2ef08046fa9eed6b84d90593008f8b19097eb286d5485e1857e995a5919c01e7e11d1d62176a4f88391acf5819c897ca856745f63cbd7a80dceb744b60b8fc3

Download Submit
C:\Users\Admin\AppData\Roaming\Ykiver\maybx.exe

Filesize
308KB

MD5
8afbadaf9daebbe908da396aab613b38

SHA1
78a59905641ef8bb32f019b71ff1af5a954bbd40

SHA256
0560277f9616b81a29d31dad284664819b1b67e97298876567f7d4967de57e43

SHA512
daf5ab700d7d7a95ce37aeec549e767f8bfd4ec11b7e870aa4c1ad47440de402950d1f0ca979e39bed5ea1900f589c546a38a57d56df75a2c2eb82c7ecfbac87

Download Submit
C:\Users\Admin\AppData\Roaming\Ykiver\maybx.exe

Filesize
308KB

MD5
8afbadaf9daebbe908da396aab613b38

SHA1
78a59905641ef8bb32f019b71ff1af5a954bbd40

SHA256
0560277f9616b81a29d31dad284664819b1b67e97298876567f7d4967de57e43

SHA512
daf5ab700d7d7a95ce37aeec549e767f8bfd4ec11b7e870aa4c1ad47440de402950d1f0ca979e39bed5ea1900f589c546a38a57d56df75a2c2eb82c7ecfbac87

Download Submit
\Users\Admin\AppData\Roaming\Ykiver\maybx.exe

Filesize
308KB

MD5
8afbadaf9daebbe908da396aab613b38

SHA1
78a59905641ef8bb32f019b71ff1af5a954bbd40

SHA256
0560277f9616b81a29d31dad284664819b1b67e97298876567f7d4967de57e43

SHA512
daf5ab700d7d7a95ce37aeec549e767f8bfd4ec11b7e870aa4c1ad47440de402950d1f0ca979e39bed5ea1900f589c546a38a57d56df75a2c2eb82c7ecfbac87

Download Submit
\Users\Admin\AppData\Roaming\Ykiver\maybx.exe

Filesize
308KB

MD5
8afbadaf9daebbe908da396aab613b38

SHA1
78a59905641ef8bb32f019b71ff1af5a954bbd40

SHA256
0560277f9616b81a29d31dad284664819b1b67e97298876567f7d4967de57e43

SHA512
daf5ab700d7d7a95ce37aeec549e767f8bfd4ec11b7e870aa4c1ad47440de402950d1f0ca979e39bed5ea1900f589c546a38a57d56df75a2c2eb82c7ecfbac87

Download Submit
memory/360-111-0x000000006FFF0000-0x0000000070000000-memory.dmp

Filesize
64KB

Download
memory/360-107-0x000000006FFF0000-0x0000000070000000-memory.dmp

Filesize
64KB

Download
memory/360-112-0x0000000000050000-0x0000000000099000-memory.dmp

Filesize
292KB

Download
memory/360-97-0x0000000000050000-0x0000000000099000-memory.dmp

Filesize
292KB

Download
memory/360-110-0x000000006FFF0000-0x0000000070000000-memory.dmp

Filesize
64KB

Download
memory/360-109-0x000000006FFF0000-0x0000000070000000-memory.dmp

Filesize
64KB

Download
memory/360-108-0x000000006FFF0000-0x0000000070000000-memory.dmp

Filesize
64KB

Download
memory/360-99-0x0000000000050000-0x0000000000099000-memory.dmp

Filesize
292KB

Download
memory/360-106-0x000000006FFF0000-0x0000000070000000-memory.dmp

Filesize
64KB

Download
memory/360-105-0x000000006FFF0000-0x0000000070000000-memory.dmp

Filesize
64KB

Download
memory/360-101-0x0000000000050000-0x0000000000099000-memory.dmp

Filesize
292KB

Download
memory/360-100-0x0000000000050000-0x0000000000099000-memory.dmp

Filesize
292KB

Download
memory/1248-68-0x00000000002B0000-0x00000000002F9000-memory.dmp

Filesize
292KB

Download
memory/1248-65-0x00000000002B0000-0x00000000002F9000-memory.dmp

Filesize
292KB

Download
memory/1248-67-0x00000000002B0000-0x00000000002F9000-memory.dmp

Filesize
292KB

Download
memory/1248-69-0x00000000002B0000-0x00000000002F9000-memory.dmp

Filesize
292KB

Download
memory/1248-70-0x00000000002B0000-0x00000000002F9000-memory.dmp

Filesize
292KB

Download
memory/1360-76-0x00000000002B0000-0x00000000002F9000-memory.dmp

Filesize
292KB

Download
memory/1392-82-0x0000000002A70000-0x0000000002AB9000-memory.dmp

Filesize
292KB

Download
memory/1392-81-0x0000000002A70000-0x0000000002AB9000-memory.dmp

Filesize
292KB

Download
memory/1392-79-0x0000000002A70000-0x0000000002AB9000-memory.dmp

Filesize
292KB

Download
memory/1392-80-0x0000000002A70000-0x0000000002AB9000-memory.dmp

Filesize
292KB

Download
memory/1464-87-0x0000000000460000-0x00000000004A9000-memory.dmp

Filesize
292KB

Download
memory/1464-94-0x000000006FFF0000-0x0000000070000000-memory.dmp

Filesize
64KB

Download
memory/1464-85-0x0000000000460000-0x00000000004A9000-memory.dmp

Filesize
292KB

Download
memory/1464-86-0x0000000000460000-0x00000000004A9000-memory.dmp

Filesize
292KB

Download
memory/1464-103-0x0000000000460000-0x00000000004A9000-memory.dmp

Filesize
292KB

Download
memory/1464-89-0x000000006FFF0000-0x0000000070000000-memory.dmp

Filesize
64KB

Download
memory/1464-91-0x000000006FFF0000-0x0000000070000000-memory.dmp

Filesize
64KB

Download
memory/1464-90-0x000000006FFF0000-0x0000000070000000-memory.dmp

Filesize
64KB

Download
memory/1464-93-0x000000006FFF0000-0x0000000070000000-memory.dmp

Filesize
64KB

Download
memory/1464-55-0x0000000000401000-0x0000000000442000-memory.dmp

Filesize
260KB

Download
memory/1464-92-0x000000006FFF0000-0x0000000070000000-memory.dmp

Filesize
64KB

Download
memory/1464-88-0x0000000000460000-0x00000000004A9000-memory.dmp

Filesize
292KB

Download
memory/1464-56-0x00000000758B1000-0x00000000758B3000-memory.dmp

Filesize
8KB

Download
memory/1464-54-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download