nymaim | 8a8f7abf5691793eab15ad5737c24a58201a6fb858408ad83c933d2e2783c068

Analysis

max time kernel
61s
max time network
67s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
23-11-2022 21:03

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General

Target

file.exe
Size

1.4MB
MD5

fc5e076046f33048a0b789d8a0f0147e
SHA1

694b7316b2e934e1cbdb10aae502ecfc4995f7fd
SHA256

8a8f7abf5691793eab15ad5737c24a58201a6fb858408ad83c933d2e2783c068
SHA512

dc8e88d4c97ff30624b3abaf51ef85318fd303e4afedddedcddbd0490d8bfc65e0c84f7c2560dcf443936535b2603d947eca187e893f109f5c137006e014f371
SSDEEP

24576:RizBpZCy1pq1LZon1kl8BQBYcEwHihNLZcK4uApNrkYhGKba3MgZIY7eCLxYi0:6Jpq1LZwG2q5HiqBptjWbNeVi0

Score

10^/10

nymaim discovery trojan

Malware Config

Extracted

Family

nymaim

45.139.105.171

85.31.46.167

Signatures

NyMaim
NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
trojan nymaim
Executes dropped EXE 3 IoCs

Processes:

is-SAVPH.tmpPrintFolders.exe4wnkgCuv2csW.exe

pid process

984 is-SAVPH.tmp
896 PrintFolders.exe
1636 4wnkgCuv2csW.exe

pid	process
984	is-SAVPH.tmp
896	PrintFolders.exe
1636	4wnkgCuv2csW.exe

Loads dropped DLL 10 IoCs

Processes:

file.exeis-SAVPH.tmpPrintFolders.exe4wnkgCuv2csW.exe

pid	process
1700	file.exe
984	is-SAVPH.tmp
984	is-SAVPH.tmp
984	is-SAVPH.tmp
984	is-SAVPH.tmp
896	PrintFolders.exe
896	PrintFolders.exe
896	PrintFolders.exe
1636	4wnkgCuv2csW.exe
1636	4wnkgCuv2csW.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in Program Files directory 9 IoCs

Processes:

is-SAVPH.tmp

description	ioc	process
File opened for modification	C:\Program Files (x86)\PrintFolders\PrintFolders.exe	is-SAVPH.tmp
File created	C:\Program Files (x86)\PrintFolders\is-HDFEO.tmp	is-SAVPH.tmp
File created	C:\Program Files (x86)\PrintFolders\is-A2R3U.tmp	is-SAVPH.tmp
File created	C:\Program Files (x86)\PrintFolders\is-UDOV6.tmp	is-SAVPH.tmp
File created	C:\Program Files (x86)\PrintFolders\is-9U7TJ.tmp	is-SAVPH.tmp
File created	C:\Program Files (x86)\PrintFolders\unins000.dat	is-SAVPH.tmp
File created	C:\Program Files (x86)\PrintFolders\is-KFR4T.tmp	is-SAVPH.tmp
File created	C:\Program Files (x86)\PrintFolders\is-9RDLO.tmp	is-SAVPH.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\unins000.dat	is-SAVPH.tmp

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

1884 taskkill.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

PrintFolders.exe

pid process

896 PrintFolders.exe
896 PrintFolders.exe
896 PrintFolders.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

is-SAVPH.tmptaskkill.exe

description pid process

Token: SeRestorePrivilege 984 is-SAVPH.tmp
Token: SeBackupPrivilege 984 is-SAVPH.tmp
Token: SeDebugPrivilege 1884 taskkill.exe

pid	process
1884	taskkill.exe

pid	process
896	PrintFolders.exe
896	PrintFolders.exe
896	PrintFolders.exe

description	pid	process
Token: SeRestorePrivilege	984	is-SAVPH.tmp
Token: SeBackupPrivilege	984	is-SAVPH.tmp
Token: SeDebugPrivilege	1884	taskkill.exe

Suspicious use of WriteProcessMemory 35 IoCs

Processes:

file.exeis-SAVPH.tmpPrintFolders.execmd.exe

description	pid	process	target process
PID 1700 wrote to memory of 984	1700	file.exe	is-SAVPH.tmp
PID 1700 wrote to memory of 984	1700	file.exe	is-SAVPH.tmp
PID 1700 wrote to memory of 984	1700	file.exe	is-SAVPH.tmp
PID 1700 wrote to memory of 984	1700	file.exe	is-SAVPH.tmp
PID 1700 wrote to memory of 984	1700	file.exe	is-SAVPH.tmp
PID 1700 wrote to memory of 984	1700	file.exe	is-SAVPH.tmp
PID 1700 wrote to memory of 984	1700	file.exe	is-SAVPH.tmp
PID 984 wrote to memory of 896	984	is-SAVPH.tmp	PrintFolders.exe
PID 984 wrote to memory of 896	984	is-SAVPH.tmp	PrintFolders.exe
PID 984 wrote to memory of 896	984	is-SAVPH.tmp	PrintFolders.exe
PID 984 wrote to memory of 896	984	is-SAVPH.tmp	PrintFolders.exe
PID 984 wrote to memory of 896	984	is-SAVPH.tmp	PrintFolders.exe
PID 984 wrote to memory of 896	984	is-SAVPH.tmp	PrintFolders.exe
PID 984 wrote to memory of 896	984	is-SAVPH.tmp	PrintFolders.exe
PID 896 wrote to memory of 1636	896	PrintFolders.exe	4wnkgCuv2csW.exe
PID 896 wrote to memory of 1636	896	PrintFolders.exe	4wnkgCuv2csW.exe
PID 896 wrote to memory of 1636	896	PrintFolders.exe	4wnkgCuv2csW.exe
PID 896 wrote to memory of 1636	896	PrintFolders.exe	4wnkgCuv2csW.exe
PID 896 wrote to memory of 1636	896	PrintFolders.exe	4wnkgCuv2csW.exe
PID 896 wrote to memory of 1636	896	PrintFolders.exe	4wnkgCuv2csW.exe
PID 896 wrote to memory of 1636	896	PrintFolders.exe	4wnkgCuv2csW.exe
PID 896 wrote to memory of 2012	896	PrintFolders.exe	cmd.exe
PID 896 wrote to memory of 2012	896	PrintFolders.exe	cmd.exe
PID 896 wrote to memory of 2012	896	PrintFolders.exe	cmd.exe
PID 896 wrote to memory of 2012	896	PrintFolders.exe	cmd.exe
PID 896 wrote to memory of 2012	896	PrintFolders.exe	cmd.exe
PID 896 wrote to memory of 2012	896	PrintFolders.exe	cmd.exe
PID 896 wrote to memory of 2012	896	PrintFolders.exe	cmd.exe
PID 2012 wrote to memory of 1884	2012	cmd.exe	taskkill.exe
PID 2012 wrote to memory of 1884	2012	cmd.exe	taskkill.exe
PID 2012 wrote to memory of 1884	2012	cmd.exe	taskkill.exe
PID 2012 wrote to memory of 1884	2012	cmd.exe	taskkill.exe
PID 2012 wrote to memory of 1884	2012	cmd.exe	taskkill.exe
PID 2012 wrote to memory of 1884	2012	cmd.exe	taskkill.exe
PID 2012 wrote to memory of 1884	2012	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1700

C:\Users\Admin\AppData\Local\Temp\is-MH4L1.tmp\is-SAVPH.tmp
"C:\Users\Admin\AppData\Local\Temp\is-MH4L1.tmp\is-SAVPH.tmp" /SL4 $70120 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1232095 51712
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:984

C:\Program Files (x86)\PrintFolders\PrintFolders.exe
"C:\Program Files (x86)\PrintFolders\PrintFolders.exe"
3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:896

C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\4wnkgCuv2csW.exe
4⤵
- Executes dropped EXE
- Loads dropped DLL
PID:1636

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c taskkill /im "PrintFolders.exe" /f & erase "C:\Program Files (x86)\PrintFolders\PrintFolders.exe" & exit
4⤵
- Suspicious use of WriteProcessMemory
PID:2012

C:\Windows\SysWOW64\taskkill.exe
taskkill /im "PrintFolders.exe" /f
5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1884

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\PrintFolders\PrintFolders.exe

Filesize
1.6MB

MD5
ca93ad432fdd716edb352f61c470ce39

SHA1
b8d8b567cd110a41745aa5cb27e9408b5daf0cb2

SHA256
a7531d63edb6c8432a38a6c190724909484d4f6f6021ac111b1e9ae948082670

SHA512
234194c04dc5be05bdaea3e993843d6a2dbd7e69df23a88564ebf188ceb28e8a7617a06e4293b5f0675a88e29cad61f69b7690641b63107544280a0706446a70

Download Submit
C:\Program Files (x86)\PrintFolders\PrintFolders.exe

Filesize
1.6MB

MD5
ca93ad432fdd716edb352f61c470ce39

SHA1
b8d8b567cd110a41745aa5cb27e9408b5daf0cb2

SHA256
a7531d63edb6c8432a38a6c190724909484d4f6f6021ac111b1e9ae948082670

SHA512
234194c04dc5be05bdaea3e993843d6a2dbd7e69df23a88564ebf188ceb28e8a7617a06e4293b5f0675a88e29cad61f69b7690641b63107544280a0706446a70

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-MH4L1.tmp\is-SAVPH.tmp

Filesize
643KB

MD5
85b94e72c3f2d2b5464e2aaf3c9e242a

SHA1
ce7ccae5f50a990d059d59292d4a332979e162ba

SHA256
1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7

SHA512
c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-MH4L1.tmp\is-SAVPH.tmp

Filesize
643KB

MD5
85b94e72c3f2d2b5464e2aaf3c9e242a

SHA1
ce7ccae5f50a990d059d59292d4a332979e162ba

SHA256
1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7

SHA512
c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880

Download Submit
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\4wnkgCuv2csW.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\4wnkgCuv2csW.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Program Files (x86)\PrintFolders\PrintFolders.exe

Filesize
1.6MB

MD5
ca93ad432fdd716edb352f61c470ce39

SHA1
b8d8b567cd110a41745aa5cb27e9408b5daf0cb2

SHA256
a7531d63edb6c8432a38a6c190724909484d4f6f6021ac111b1e9ae948082670

SHA512
234194c04dc5be05bdaea3e993843d6a2dbd7e69df23a88564ebf188ceb28e8a7617a06e4293b5f0675a88e29cad61f69b7690641b63107544280a0706446a70

Download Submit
\Program Files (x86)\PrintFolders\PrintFolders.exe

Filesize
1.6MB

MD5
ca93ad432fdd716edb352f61c470ce39

SHA1
b8d8b567cd110a41745aa5cb27e9408b5daf0cb2

SHA256
a7531d63edb6c8432a38a6c190724909484d4f6f6021ac111b1e9ae948082670

SHA512
234194c04dc5be05bdaea3e993843d6a2dbd7e69df23a88564ebf188ceb28e8a7617a06e4293b5f0675a88e29cad61f69b7690641b63107544280a0706446a70

Download Submit
\Program Files (x86)\PrintFolders\PrintFolders.exe

Filesize
1.6MB

MD5
ca93ad432fdd716edb352f61c470ce39

SHA1
b8d8b567cd110a41745aa5cb27e9408b5daf0cb2

SHA256
a7531d63edb6c8432a38a6c190724909484d4f6f6021ac111b1e9ae948082670

SHA512
234194c04dc5be05bdaea3e993843d6a2dbd7e69df23a88564ebf188ceb28e8a7617a06e4293b5f0675a88e29cad61f69b7690641b63107544280a0706446a70

Download Submit
\Users\Admin\AppData\Local\Temp\is-61R0V.tmp\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-61R0V.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-61R0V.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-MH4L1.tmp\is-SAVPH.tmp

Filesize
643KB

MD5
85b94e72c3f2d2b5464e2aaf3c9e242a

SHA1
ce7ccae5f50a990d059d59292d4a332979e162ba

SHA256
1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7

SHA512
c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\4wnkgCuv2csW.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\4wnkgCuv2csW.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\4wnkgCuv2csW.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/896-67-0x0000000000000000-mapping.dmp

Download
memory/896-74-0x0000000000400000-0x00000000013A4000-memory.dmp

Filesize
15.6MB

Download
memory/896-75-0x00000000019F0000-0x0000000002994000-memory.dmp

Filesize
15.6MB

Download
memory/896-76-0x0000000000400000-0x00000000013A4000-memory.dmp

Filesize
15.6MB

Download
memory/896-77-0x0000000000400000-0x00000000013A4000-memory.dmp

Filesize
15.6MB

Download
memory/896-87-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/896-86-0x0000000000400000-0x00000000013A4000-memory.dmp

Filesize
15.6MB

Download
memory/896-91-0x0000000000400000-0x00000000013A4000-memory.dmp

Filesize
15.6MB

Download
memory/896-95-0x0000000000400000-0x00000000013A4000-memory.dmp

Filesize
15.6MB

Download
memory/984-73-0x00000000030B0000-0x0000000004054000-memory.dmp

Filesize
15.6MB

Download
memory/984-85-0x00000000030B0000-0x0000000004054000-memory.dmp

Filesize
15.6MB

Download
memory/984-58-0x0000000000000000-mapping.dmp

Download
memory/1636-79-0x0000000000000000-mapping.dmp

Download
memory/1700-55-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/1700-54-0x0000000074E41000-0x0000000074E43000-memory.dmp

Filesize
8KB

Download
memory/1700-65-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/1700-96-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/1884-94-0x0000000000000000-mapping.dmp

Download
memory/2012-92-0x0000000000000000-mapping.dmp

Download