nymaim | 282bd64999bee6b848ed49ab45931dc1cbe372e2314b79b4b4044b96b9a6f30d

Analysis

max time kernel
53s
max time network
55s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
13-01-2023 10:16

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General

Target

file.exe
Size

1.5MB
MD5

51d9391c71e4041f5c6f9ea521b87596
SHA1

c1cff57087b81419d326888d8cddf707eed70410
SHA256

282bd64999bee6b848ed49ab45931dc1cbe372e2314b79b4b4044b96b9a6f30d
SHA512

9ec56de8eadb17519b864076047ae91f8b05a88731c40f66bc5903320a80088592dc6b287a3a806999745efb5872d0d44f1c009684a4948e672e632bb3f12a34
SSDEEP

24576:g20hhVgSj1rQy8XZN8xQOoANXu+a5Gt+Znq9a0/aJeupGvJYf+kATuCqtn/:g2QVZj1rQpzrL8tqqD0J8FkATuCE/

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:

file.tmpNitFiles451.exehKNq9ryQH3CW.exe

pid process

1348 file.tmp
876 NitFiles451.exe
872 hKNq9ryQH3CW.exe
Loads dropped DLL 6 IoCs

Processes:

file.exefile.tmpNitFiles451.exe

pid process

1544 file.exe
1348 file.tmp
1348 file.tmp
1348 file.tmp
1348 file.tmp
876 NitFiles451.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

pid	process
1348	file.tmp
876	NitFiles451.exe
872	hKNq9ryQH3CW.exe

pid	process
1544	file.exe
1348	file.tmp
1348	file.tmp
1348	file.tmp
1348	file.tmp
876	NitFiles451.exe

Drops file in Program Files directory 17 IoCs

Processes:

file.tmp

description	ioc	process
File created	C:\Program Files (x86)\Nit Files\language\is-J5ADI.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-BARK5.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-1HG2D.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-4NDSR.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-DNDRL.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-RES6F.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-QUU95.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-DMBH1.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-BAHMA.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-UBK5O.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-A1L7C.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-GOSGE.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-7LM21.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Nit Files\NitFiles451.exe	file.tmp
File created	C:\Program Files (x86)\Nit Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-KLA91.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Nit Files\unins000.dat	file.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

840 taskkill.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

NitFiles451.exe

pid process

876 NitFiles451.exe
876 NitFiles451.exe
876 NitFiles451.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 840 taskkill.exe

pid	process
840	taskkill.exe

pid	process
876	NitFiles451.exe
876	NitFiles451.exe
876	NitFiles451.exe

description	pid	process
Token: SeDebugPrivilege	840	taskkill.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

file.exefile.tmpNitFiles451.execmd.exe

description	pid	process	target process
PID 1544 wrote to memory of 1348	1544	file.exe	file.tmp
PID 1544 wrote to memory of 1348	1544	file.exe	file.tmp
PID 1544 wrote to memory of 1348	1544	file.exe	file.tmp
PID 1544 wrote to memory of 1348	1544	file.exe	file.tmp
PID 1544 wrote to memory of 1348	1544	file.exe	file.tmp
PID 1544 wrote to memory of 1348	1544	file.exe	file.tmp
PID 1544 wrote to memory of 1348	1544	file.exe	file.tmp
PID 1348 wrote to memory of 876	1348	file.tmp	NitFiles451.exe
PID 1348 wrote to memory of 876	1348	file.tmp	NitFiles451.exe
PID 1348 wrote to memory of 876	1348	file.tmp	NitFiles451.exe
PID 1348 wrote to memory of 876	1348	file.tmp	NitFiles451.exe
PID 876 wrote to memory of 872	876	NitFiles451.exe	hKNq9ryQH3CW.exe
PID 876 wrote to memory of 872	876	NitFiles451.exe	hKNq9ryQH3CW.exe
PID 876 wrote to memory of 872	876	NitFiles451.exe	hKNq9ryQH3CW.exe
PID 876 wrote to memory of 872	876	NitFiles451.exe	hKNq9ryQH3CW.exe
PID 876 wrote to memory of 432	876	NitFiles451.exe	cmd.exe
PID 876 wrote to memory of 432	876	NitFiles451.exe	cmd.exe
PID 876 wrote to memory of 432	876	NitFiles451.exe	cmd.exe
PID 876 wrote to memory of 432	876	NitFiles451.exe	cmd.exe
PID 432 wrote to memory of 840	432	cmd.exe	taskkill.exe
PID 432 wrote to memory of 840	432	cmd.exe	taskkill.exe
PID 432 wrote to memory of 840	432	cmd.exe	taskkill.exe
PID 432 wrote to memory of 840	432	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:1544

C:\Users\Admin\AppData\Local\Temp\is-T0HTL.tmp\file.tmp
"C:\Users\Admin\AppData\Local\Temp\is-T0HTL.tmp\file.tmp" /SL5="$140150,1283700,233984,C:\Users\Admin\AppData\Local\Temp\file.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1348

C:\Program Files (x86)\Nit Files\NitFiles451.exe
"C:\Program Files (x86)\Nit Files\NitFiles451.exe"
3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:876

C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\hKNq9ryQH3CW.exe
4⤵
- Executes dropped EXE
PID:872

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c taskkill /im "NitFiles451.exe" /f & erase "C:\Program Files (x86)\Nit Files\NitFiles451.exe" & exit
4⤵
- Suspicious use of WriteProcessMemory
PID:432

C:\Windows\SysWOW64\taskkill.exe
taskkill /im "NitFiles451.exe" /f
5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:840

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Nit Files\NitFiles451.exe
Filesize
2.1MB

MD5
848d28294dc251ca5a41cde83fe70f8a

SHA1
92719e959e9168bd08236e27c9805a6085fdfeac

SHA256
30cd6c27a407faf6e76390aac6e337e5c0468ca2cdc117b31015cf2ebf662f3e

SHA512
66170e94ab4b116d506cf11ce15ba9ef0f3d68cb298bc996b8ff4ae4772b763b16968ba1591e7433955d6d7ced3ba7b41fd282604cf4cb3e1d8ed200783a0925

Download Submit
C:\Program Files (x86)\Nit Files\NitFiles451.exe
Filesize
2.1MB

MD5
848d28294dc251ca5a41cde83fe70f8a

SHA1
92719e959e9168bd08236e27c9805a6085fdfeac

SHA256
30cd6c27a407faf6e76390aac6e337e5c0468ca2cdc117b31015cf2ebf662f3e

SHA512
66170e94ab4b116d506cf11ce15ba9ef0f3d68cb298bc996b8ff4ae4772b763b16968ba1591e7433955d6d7ced3ba7b41fd282604cf4cb3e1d8ed200783a0925

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-T0HTL.tmp\file.tmp
Filesize
849KB

MD5
56c525b0e7751035562a3bd35096b17d

SHA1
befb8a8e73e296e95412b319bc20f76fb382d525

SHA256
6fbb6401d3de1f971f182f9292e817fbeee537725cd5a5974b2bd7bd90a26559

SHA512
75e793a12229ac68cc5ed92d97c1db55dbeb1712cb5377fc2323363e4ffd026f2e68c7852fa0eb6837c8ba7f5449a70160c3cadb49c062c4dc53cdbccdf6d354

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-T0HTL.tmp\file.tmp
Filesize
849KB

MD5
56c525b0e7751035562a3bd35096b17d

SHA1
befb8a8e73e296e95412b319bc20f76fb382d525

SHA256
6fbb6401d3de1f971f182f9292e817fbeee537725cd5a5974b2bd7bd90a26559

SHA512
75e793a12229ac68cc5ed92d97c1db55dbeb1712cb5377fc2323363e4ffd026f2e68c7852fa0eb6837c8ba7f5449a70160c3cadb49c062c4dc53cdbccdf6d354

Download Submit
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\hKNq9ryQH3CW.exe
Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Program Files (x86)\Nit Files\NitFiles451.exe
Filesize
2.1MB

MD5
848d28294dc251ca5a41cde83fe70f8a

SHA1
92719e959e9168bd08236e27c9805a6085fdfeac

SHA256
30cd6c27a407faf6e76390aac6e337e5c0468ca2cdc117b31015cf2ebf662f3e

SHA512
66170e94ab4b116d506cf11ce15ba9ef0f3d68cb298bc996b8ff4ae4772b763b16968ba1591e7433955d6d7ced3ba7b41fd282604cf4cb3e1d8ed200783a0925

Download Submit
\Users\Admin\AppData\Local\Temp\is-L5LRO.tmp\_isetup\_iscrypt.dll
Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-L5LRO.tmp\_isetup\_shfoldr.dll
Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-L5LRO.tmp\_isetup\_shfoldr.dll
Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-T0HTL.tmp\file.tmp
Filesize
849KB

MD5
56c525b0e7751035562a3bd35096b17d

SHA1
befb8a8e73e296e95412b319bc20f76fb382d525

SHA256
6fbb6401d3de1f971f182f9292e817fbeee537725cd5a5974b2bd7bd90a26559

SHA512
75e793a12229ac68cc5ed92d97c1db55dbeb1712cb5377fc2323363e4ffd026f2e68c7852fa0eb6837c8ba7f5449a70160c3cadb49c062c4dc53cdbccdf6d354

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\hKNq9ryQH3CW.exe
Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/432-84-0x0000000000000000-mapping.dmp

Download
memory/840-85-0x0000000000000000-mapping.dmp

Download
memory/872-75-0x0000000000000000-mapping.dmp

Download
memory/876-71-0x0000000000400000-0x000000000141B000-memory.dmp

Filesize
16.1MB

Download
memory/876-82-0x0000000000400000-0x000000000141B000-memory.dmp

Filesize
16.1MB

Download
memory/876-73-0x0000000000400000-0x000000000141B000-memory.dmp

Filesize
16.1MB

Download
memory/876-86-0x0000000000400000-0x000000000141B000-memory.dmp

Filesize
16.1MB

Download
memory/876-72-0x0000000000400000-0x000000000141B000-memory.dmp

Filesize
16.1MB

Download
memory/876-66-0x0000000000000000-mapping.dmp

Download
memory/876-77-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/876-83-0x0000000000400000-0x000000000141B000-memory.dmp

Filesize
16.1MB

Download
memory/1348-70-0x00000000035E0000-0x00000000045FB000-memory.dmp

Filesize
16.1MB

Download
memory/1348-81-0x00000000035E0000-0x00000000045FB000-memory.dmp

Filesize
16.1MB

Download
memory/1348-58-0x0000000000000000-mapping.dmp

Download
memory/1544-69-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1544-54-0x0000000076201000-0x0000000076203000-memory.dmp

Filesize
8KB

Download
memory/1544-87-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1544-55-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download