Behavioral task
behavioral1
Sample
encryptfilesworking.exe
Resource
win7-20240221-en
General
-
Target
69f2a9754bebe40b0275eeebcfca7951_JaffaCakes118
-
Size
40KB
-
MD5
69f2a9754bebe40b0275eeebcfca7951
-
SHA1
5d544896597c2af07fd1c2680ff521eafd5d0e6c
-
SHA256
864f0e1ce15a180bf911e38bf7180320b0ff3d1569563595401b3d0f5c7c9470
-
SHA512
34ec4e559476ca51ddc0fd096549a9d1353286b96e3a2e21d5ba57ee3b7fae04914844b4373bfe02233452af5a60c956b1e158c7fcb139877e3046ee7b4f1d2c
-
SSDEEP
768:Xau163Osq8Z7Lp0x3YfAIy3tE+SnobzoAE5rcPPaNaqhFXCqxs2mXo9:H168Wp09xV5Es0DcKNDhl9f
Malware Config
Signatures
-
resource yara_rule static1/unpack001/encryptfilesworking.exe upx -
Unsigned PE 2 IoCs
Checks for missing Authenticode signature.
resource unpack001/encryptfilesworking.exe unpack002/out.upx
Files
-
69f2a9754bebe40b0275eeebcfca7951_JaffaCakes118.rar
-
encryptfilesworking.exe.exe windows:1 windows x86 arch:x86
Headers
File Characteristics
IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_BYTES_REVERSED_LO
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_BYTES_REVERSED_HI
Sections
UPX0 Size: - Virtual size: 76KB
IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
UPX1 Size: 39KB - Virtual size: 40KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 5KB - Virtual size: 8KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
-
out.upx.exe windows:1 windows x86 arch:x86
Headers
File Characteristics
IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_BYTES_REVERSED_LO
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_BYTES_REVERSED_HI
Sections
CODE Size: 69KB - Virtual size: 69KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
DATA Size: 5KB - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
BSS Size: - Virtual size: 1KB
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.idata Size: 4KB - Virtual size: 3KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.tls Size: - Virtual size: 8B
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rdata Size: 512B - Virtual size: 24B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 3KB - Virtual size: 2KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rsrc Size: 5KB - Virtual size: 5KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ