851d863ddd1dc3b62d1b3371c045a42c6690460968edd56c62a929f696e27c1d

Analysis

max time kernel
142s
max time network
164s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
06-04-2024 04:52

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General

Target

dbb5d0ae6717c01a48076d644189579c_JaffaCakes118.exe
Size

207KB
MD5

dbb5d0ae6717c01a48076d644189579c
SHA1

e5ae287805796da847eea1f1291557c4863c2732
SHA256

851d863ddd1dc3b62d1b3371c045a42c6690460968edd56c62a929f696e27c1d
SHA512

d101602c48d3259721950f2d479b81c17b8edff24d336692f4b8bc0f0a2cd73875c615699f493fede58b5bd9ba11816d6969b18cac78f7fcd06263ac4c1d6c92
SSDEEP

3072:81abGWGT2TK1dbzlF9OVtSZjCw8geIr/QAuCgNVfpxICuQsKUIZn:tbpGtfoVtScw2RCgrzItQB

Score

7^/10

persistence upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3848	HCYGVS.EXE

Modifies system executable filetype association 2 TTPs 2 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1546.001

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command	HCYGVS.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\PerfLogs\\YJUN.EXE \"%1\" %*"	HCYGVS.EXE

UPX packed file 18 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/2696-0-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/files/0x0007000000023349-10.dat	upx
behavioral2/files/0x0007000000023347-21.dat	upx
behavioral2/memory/3848-23-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/2696-25-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/3848-26-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/3848-30-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/3848-32-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/3848-34-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/3848-35-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/3848-36-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/3848-37-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/3848-38-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/3848-39-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/3848-40-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/3848-41-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/3848-42-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral2/memory/3848-43-0x0000000000400000-0x000000000046E000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ARCPWV.EXE = "C:\\Users\\ARCPWV.EXE"	dbb5d0ae6717c01a48076d644189579c_JaffaCakes118.exe

Enumerates connected drives 3 TTPs 34 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\N:	dbb5d0ae6717c01a48076d644189579c_JaffaCakes118.exe
File opened (read-only)	\??\R:	dbb5d0ae6717c01a48076d644189579c_JaffaCakes118.exe
File opened (read-only)	\??\V:	dbb5d0ae6717c01a48076d644189579c_JaffaCakes118.exe
File opened (read-only)	\??\L:	HCYGVS.EXE
File opened (read-only)	\??\Q:	HCYGVS.EXE
File opened (read-only)	\??\S:	HCYGVS.EXE
File opened (read-only)	\??\J:	dbb5d0ae6717c01a48076d644189579c_JaffaCakes118.exe
File opened (read-only)	\??\K:	dbb5d0ae6717c01a48076d644189579c_JaffaCakes118.exe
File opened (read-only)	\??\L:	dbb5d0ae6717c01a48076d644189579c_JaffaCakes118.exe
File opened (read-only)	\??\S:	dbb5d0ae6717c01a48076d644189579c_JaffaCakes118.exe
File opened (read-only)	\??\O:	HCYGVS.EXE
File opened (read-only)	\??\O:	dbb5d0ae6717c01a48076d644189579c_JaffaCakes118.exe
File opened (read-only)	\??\Q:	dbb5d0ae6717c01a48076d644189579c_JaffaCakes118.exe
File opened (read-only)	\??\H:	HCYGVS.EXE
File opened (read-only)	\??\R:	HCYGVS.EXE
File opened (read-only)	\??\U:	HCYGVS.EXE
File opened (read-only)	\??\V:	HCYGVS.EXE
File opened (read-only)	\??\E:	dbb5d0ae6717c01a48076d644189579c_JaffaCakes118.exe
File opened (read-only)	\??\H:	dbb5d0ae6717c01a48076d644189579c_JaffaCakes118.exe
File opened (read-only)	\??\T:	dbb5d0ae6717c01a48076d644189579c_JaffaCakes118.exe
File opened (read-only)	\??\P:	HCYGVS.EXE
File opened (read-only)	\??\M:	dbb5d0ae6717c01a48076d644189579c_JaffaCakes118.exe
File opened (read-only)	\??\E:	HCYGVS.EXE
File opened (read-only)	\??\N:	HCYGVS.EXE
File opened (read-only)	\??\T:	HCYGVS.EXE
File opened (read-only)	\??\P:	dbb5d0ae6717c01a48076d644189579c_JaffaCakes118.exe
File opened (read-only)	\??\G:	HCYGVS.EXE
File opened (read-only)	\??\M:	HCYGVS.EXE
File opened (read-only)	\??\I:	dbb5d0ae6717c01a48076d644189579c_JaffaCakes118.exe
File opened (read-only)	\??\U:	dbb5d0ae6717c01a48076d644189579c_JaffaCakes118.exe
File opened (read-only)	\??\I:	HCYGVS.EXE
File opened (read-only)	\??\J:	HCYGVS.EXE
File opened (read-only)	\??\G:	dbb5d0ae6717c01a48076d644189579c_JaffaCakes118.exe
File opened (read-only)	\??\K:	HCYGVS.EXE

Modifies registry class 18 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\QQQ.file\shell\open\command\ = "C:\\PerfLogs\\POBQ.EXE %1"	dbb5d0ae6717c01a48076d644189579c_JaffaCakes118.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\QQQfile\shell\open	dbb5d0ae6717c01a48076d644189579c_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\QQQfile\shell\open\command\ = "C:\\PerfLogs\\POBQ.EXE \"%1\""	dbb5d0ae6717c01a48076d644189579c_JaffaCakes118.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\inffile\shell\open\command	dbb5d0ae6717c01a48076d644189579c_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\QQQfile\shell\open\command\ = "C:\\Users\\ARCPWV.EXE \"%1\" %*"	dbb5d0ae6717c01a48076d644189579c_JaffaCakes118.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command	HCYGVS.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command	dbb5d0ae6717c01a48076d644189579c_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "C:\\PerfLogs\\POBQ.EXE %1"	dbb5d0ae6717c01a48076d644189579c_JaffaCakes118.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\QQQ.file\shell\open\command	dbb5d0ae6717c01a48076d644189579c_JaffaCakes118.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\QQQ.file\shell	dbb5d0ae6717c01a48076d644189579c_JaffaCakes118.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\QQQ.file\shell\open	dbb5d0ae6717c01a48076d644189579c_JaffaCakes118.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\QQQfile	dbb5d0ae6717c01a48076d644189579c_JaffaCakes118.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\QQQfile\shell	dbb5d0ae6717c01a48076d644189579c_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\QQQfile\shell\open\command\ = "C:\\Users\\ARCPWV.EXE \"%1\""	dbb5d0ae6717c01a48076d644189579c_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\inffile\shell\open\command\ = "C:\\Users\\ARCPWV.EXE %1"	dbb5d0ae6717c01a48076d644189579c_JaffaCakes118.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\QQQ.file	dbb5d0ae6717c01a48076d644189579c_JaffaCakes118.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\QQQfile\shell\open\command	dbb5d0ae6717c01a48076d644189579c_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\PerfLogs\\YJUN.EXE \"%1\" %*"	HCYGVS.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3848	HCYGVS.EXE

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2696 wrote to memory of 3848	2696	dbb5d0ae6717c01a48076d644189579c_JaffaCakes118.exe	91
PID 2696 wrote to memory of 3848	2696	dbb5d0ae6717c01a48076d644189579c_JaffaCakes118.exe	91
PID 2696 wrote to memory of 3848	2696	dbb5d0ae6717c01a48076d644189579c_JaffaCakes118.exe	91

C:\Users\Admin\AppData\Local\Temp\dbb5d0ae6717c01a48076d644189579c_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\dbb5d0ae6717c01a48076d644189579c_JaffaCakes118.exe"
1⤵
- Adds Run key to start application
- Enumerates connected drives
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2696
- C:\Users\HCYGVS.EXE
  C:\Users\HCYGVS.EXE
  2⤵
  - Executes dropped EXE
  - Modifies system executable filetype association
  - Enumerates connected drives
  - Modifies registry class
  - Suspicious behavior: GetForegroundWindowSpam
  PID:3848

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4604 --field-trial-handle=2280,i,8281149332300504990,9122875031903898779,262144 --variations-seed-version /prefetch:8
1⤵
PID:3148

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Event Triggered Execution

T1546

Change Default File Association

T1546.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Event Triggered Execution

T1546

Change Default File Association

T1546.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\PerfLogs\POBQ.EXE

Filesize
207KB

MD5
b9efc9ec8a3454f0cc91a5b70aa61b7f

SHA1
17764be647fe7a652305a3477da18f9eaebac8e7

SHA256
dfdc4d3a33d167a9b06373defab6d761533e517a6269f57d0626e02b01a3638f

SHA512
70325dcd6179cd84717b4b2259c1cd76fbfd5d3b895e56dae69a66eefed245ff50f1b74764d7ba6ca7f11147252440a1269a414cf93e80720a65925b331343e8

Download Submit
C:\Users\HCYGVS.EXE

Filesize
208KB

MD5
cdf955cfdbfa5c7af1b8132085e168f3

SHA1
8b7373d04075ef712b243f5207bb3dffd1464b41

SHA256
0029a28158706a70b9b43e4d89fe26dcb5f5fa184f28d99bf9b85010ec05000d

SHA512
42c25d660f6c68ca1aab6f0b98aba26f8d3a9500a05a12ae4516fb2b40abea138be3d23f9e230ddc6ff578a6737a25182df2fa1d7d4687381a652233df65ea0c

Download Submit
\??\c:\filedebug

Filesize
214B

MD5
4ea0e1383f590b5e11bcbd166396aa78

SHA1
8a7d9b3941908ea4838a4378d291de0b85cea701

SHA256
548f0e3d9290d639113f1d0087cddb3eb9fc2aa5411d24f0004a53b2433013c1

SHA512
230baabe84101fa4e48eb723c28bed9bf7e65e86be73fa3cd1e05ef41cb1b055db26a75cf7a04a4b34788a184b670957f8f68c77ac636ca7b25dc2bec4f00958

Download Submit
memory/2696-25-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2696-5-0x0000000000720000-0x0000000000721000-memory.dmp

Filesize
4KB

Download
memory/2696-0-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3848-31-0x0000000000730000-0x0000000000731000-memory.dmp

Filesize
4KB

Download
memory/3848-35-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3848-24-0x0000000000730000-0x0000000000731000-memory.dmp

Filesize
4KB

Download
memory/3848-30-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3848-23-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3848-32-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3848-34-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3848-26-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3848-36-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3848-37-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3848-38-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3848-39-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3848-40-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3848-41-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3848-42-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/3848-43-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads