gcleaner | 3eef1d0d547de1d8edc9fb20663eb34805778d87eda3c14a56256528f6d5f743

General

Target
3eef1d0d547de1d8edc9fb20663eb34805778d87eda3c14a56256528f6d5f743.exe
Size 369KB
Sample240528-hrbtfabc75
SHA256 3eef1d0d547de1d8edc9fb20663eb34805778d87eda3c14a56256528f6d5f743
MD5 ed509c4893a3ad5607d043113a9006e9
SHA1 eb7b8e9c58eecb331dc6c4bf60528f7b861fa219
SHA512 d9dee655f0b9de69c6add3332136bd8803d3329fca04c7dc15e7156ceb15f11171591bd4e3c253dcbb07dfb659f162c4f3d7133f850655c9658379cb1bfc45fa
SSDEEP 6144:oZeJE+fnF9nqZ2NW0+t94siAoU5lePGZBuAXz7LTlcM:oZeDfnF9qZ2NpGVidUO6nXVcM
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

gcleaner loader

Malware Config

Extracted

Family

gcleaner

C2

185.172.128.90
5.42.64.56
185.172.128.69

Signatures

GCleaner
GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.
loader gcleaner
Downloads MZ/PE file
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 11 IoCs

pid	pid_target	Process	procid_target
3224	3412	WerFault.exe	76
1804	3412	WerFault.exe	76
3812	3412	WerFault.exe	76
5076	3412	WerFault.exe	76
3392	3412	WerFault.exe	76
1372	3412	WerFault.exe	76
424	3412	WerFault.exe	76
2036	3412	WerFault.exe	76
540	3412	WerFault.exe	76
3164	3412	WerFault.exe	76
5008	3412	WerFault.exe	76

Kills process with taskkill 1 IoCs

evasion

pid	Process
244	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	244	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3412 wrote to memory of 1644	3412	3eef1d0d547de1d8edc9fb20663eb34805778d87eda3c14a56256528f6d5f743.exe	98
PID 3412 wrote to memory of 1644	3412	3eef1d0d547de1d8edc9fb20663eb34805778d87eda3c14a56256528f6d5f743.exe	98
PID 3412 wrote to memory of 1644	3412	3eef1d0d547de1d8edc9fb20663eb34805778d87eda3c14a56256528f6d5f743.exe	98
PID 1644 wrote to memory of 244	1644	cmd.exe	102
PID 1644 wrote to memory of 244	1644	cmd.exe	102
PID 1644 wrote to memory of 244	1644	cmd.exe	102

C:\Users\Admin\AppData\Local\Temp\3eef1d0d547de1d8edc9fb20663eb34805778d87eda3c14a56256528f6d5f743.exe
"C:\Users\Admin\AppData\Local\Temp\3eef1d0d547de1d8edc9fb20663eb34805778d87eda3c14a56256528f6d5f743.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3412
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3412 -s 476
  2⤵
  - Program crash
  PID:3224
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3412 -s 500
  2⤵
  - Program crash
  PID:1804
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3412 -s 780
  2⤵
  - Program crash
  PID:3812
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3412 -s 800
  2⤵
  - Program crash
  PID:5076
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3412 -s 828
  2⤵
  - Program crash
  PID:3392
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3412 -s 852
  2⤵
  - Program crash
  PID:1372
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3412 -s 984
  2⤵
  - Program crash
  PID:424
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3412 -s 992
  2⤵
  - Program crash
  PID:2036
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3412 -s 1240
  2⤵
  - Program crash
  PID:540
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3412 -s 1672
  2⤵
  - Program crash
  PID:3164
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "3eef1d0d547de1d8edc9fb20663eb34805778d87eda3c14a56256528f6d5f743.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\3eef1d0d547de1d8edc9fb20663eb34805778d87eda3c14a56256528f6d5f743.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1644
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "3eef1d0d547de1d8edc9fb20663eb34805778d87eda3c14a56256528f6d5f743.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:244
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3412 -s 1648
  2⤵
  - Program crash
  PID:5008

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3412 -ip 3412
1⤵
PID:2760

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 3412 -ip 3412
1⤵
PID:4656

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 3412 -ip 3412
1⤵
PID:2284

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 3412 -ip 3412
1⤵
PID:3212

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 3412 -ip 3412
1⤵
PID:780

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 3412 -ip 3412
1⤵
PID:4728

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 3412 -ip 3412
1⤵
PID:3900

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 356 -p 3412 -ip 3412
1⤵
PID:4636

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 3412 -ip 3412
1⤵
PID:1428

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 3412 -ip 3412
1⤵
PID:2280

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 3412 -ip 3412
1⤵
PID:4976

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

advdlc[1].htm

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\VZQAW3IB\advdlc[1].htm
Size 1B
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99
MD5 SHA1 SHA512

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memory/3412-1-0x0000000002FD0000-0x00000000030D0000-memory.dmp

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memory/3412-2-0x0000000002F20000-0x0000000002F5C000-memory.dmp

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memory/3412-3-0x0000000000400000-0x0000000000440000-memory.dmp

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memory/3412-8-0x0000000010000000-0x000000001001C000-memory.dmp

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memory/3412-15-0x0000000000400000-0x0000000002CBA000-memory.dmp

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memory/3412-22-0x0000000002FD0000-0x00000000030D0000-memory.dmp

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memory/3412-23-0x0000000000400000-0x0000000000440000-memory.dmp

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memory/3412-34-0x0000000000400000-0x0000000000440000-memory.dmp

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memory/3412-33-0x0000000000400000-0x0000000002CBA000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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